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  {
    "book": "algebra-7",
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    "num": "§ 1",
    "title": "Степень с натуральным показателем и её свойства"
  },
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    "title": "Степень с целым показателем и её свойства"
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    "title": "Стандартный вид числа"
  },
  {
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    "subject": "algebra",
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    "title": "Числовые выражения и выражения с переменными"
  },
  {
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    "title": "Тождество. Тождественные преобразования"
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  },
  {
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  },
  {
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  },
  {
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    "title": "Умножение многочленов"
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  {
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    "num": "§ 13",
    "title": "Разность квадратов: (a−b)(a+b) = a\\xB2−b\\xB2"
  },
  {
    "book": "algebra-7",
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  {
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  },
  {
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    "title": "Решение текстовых задач с помощью уравнений"
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  {
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    "title": "Функция"
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  },
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    "num": "§ 1",
    "title": "Повторение материала 5-6 классов"
  },
  {
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    "subject": "geometry",
    "grade": 7,
    "para_id": "p2",
    "num": "§ 2",
    "title": "Предмет геометрии"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch1",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p3",
    "num": "§ 3",
    "title": "Прямая. Луч. Отрезок. Ломаная"
  },
  {
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    "chapter_slug": "geometry-7-ch1",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p4",
    "num": "§ 4",
    "title": "Окружность и круг"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch1",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p5",
    "num": "§ 5",
    "title": "Угол. Виды углов"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch1",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p6",
    "num": "§ 6",
    "title": "Смежные углы. Вертикальные углы"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch1",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p7",
    "num": "§ 7",
    "title": "Перпендикулярные прямые"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p8",
    "num": "§ 8",
    "title": "Треугольники"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p9",
    "num": "§ 9",
    "title": "Первый и второй признаки равенства"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p10",
    "num": "§ 10",
    "title": "Высота, медиана и биссектриса треугольника"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p11",
    "num": "§ 11",
    "title": "Равнобедренный треугольник"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p12",
    "num": "§ 12",
    "title": "Признаки равнобедренного треугольника"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p13",
    "num": "§ 13",
    "title": "Третий признак равенства треугольников"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch2",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p14",
    "num": "§ 14",
    "title": "Серединный перпендикуляр к отрезку"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch3",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p15",
    "num": "§ 15",
    "title": "Признаки параллельности прямых"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch3",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p16",
    "num": "§ 16",
    "title": "Аксиома параллельных прямых"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch3",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p17",
    "num": "§ 17",
    "title": "Свойства параллельных прямых"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch3",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p18",
    "num": "§ 18",
    "title": "Углы со сторонами, соответственно параллельными или перпендикулярными"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p19",
    "num": "§ 19",
    "title": "Сумма углов треугольника"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p20",
    "num": "§ 20",
    "title": "Внешний угол треугольника"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p21",
    "num": "§ 21",
    "title": "Соотношения между сторонами и углами"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p22",
    "num": "§ 22",
    "title": "Неравенство треугольника"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p23",
    "num": "§ 23",
    "title": "Прямоугольные треугольники"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p24",
    "num": "§ 24",
    "title": "Признаки равенства прямоугольных треугольников"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p25",
    "num": "§ 25",
    "title": "Биссектриса угла как ГМТ"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch4",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p26",
    "num": "§ 26",
    "title": "Свойство катета против угла 30°"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch5",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p27",
    "num": "§ 27",
    "title": "Простейшие построения"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch5",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p28",
    "num": "§ 28",
    "title": "Построение треугольника по 3 сторонам"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch5",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p29",
    "num": "§ 29",
    "title": "Построение биссектрисы угла"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch5",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p30",
    "num": "§ 30",
    "title": "Середина и перпендикуляр"
  },
  {
    "book": "geometry-7",
    "chapter_slug": "geometry-7-ch5",
    "subject": "geometry",
    "grade": 7,
    "para_id": "p31",
    "num": "§ 31",
    "title": "Метод геометрических мест точек"
  },
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    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p1",
    "num": "§ 1",
    "title": "Квадратный корень из числа. Арифметический квадратный корень"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p2",
    "num": "§ 2",
    "title": "Множество иррациональных чисел. Множество действительных чисел"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p3",
    "num": "§ 3",
    "title": "Свойства квадратных корней"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p4",
    "num": "§ 4",
    "title": "Применение свойств квадратных корней"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p5",
    "num": "§ 5",
    "title": "Числовые промежутки. Объединение и пересечение"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch1",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p6",
    "num": "§ 6",
    "title": "Системы и совокупности линейных неравенств. Двойные неравенства"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p7",
    "num": "§ 7",
    "title": "Квадратные уравнения. Решение неполных квадратных уравнений"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p8",
    "num": "§ 8",
    "title": "Формулы корней квадратного уравнения"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p9",
    "num": "§ 9",
    "title": "Теорема Виета"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p10",
    "num": "§ 10",
    "title": "Квадратный трёхчлен. Разложение на множители"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p11",
    "num": "§ 11",
    "title": "Решение текстовых задач с помощью квадратных уравнений"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch2",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p12",
    "num": "§ 12",
    "title": "Целые рациональные уравнения, сводящиеся к квадратным"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p13",
    "num": "§ 13",
    "title": "Числовые неравенства и их свойства"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p14",
    "num": "§ 14",
    "title": "Сложение и умножение числовых неравенств. Оценка значений"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p15",
    "num": "§ 15",
    "title": "Числовые промежутки. Линейные неравенства"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p16",
    "num": "§ 16",
    "title": "Системы и совокупности линейных неравенств"
  },
  {
    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p17",
    "num": "§ 17",
    "title": "Квадратные неравенства. Метод интервалов"
  },
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    "book": "algebra-8",
    "chapter_slug": "algebra-8-ch3",
    "subject": "algebra",
    "grade": 8,
    "para_id": "p18",
    "num": "§ 18",
    "title": "Дробно-рациональные неравенства"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p1",
    "num": "§ 1",
    "title": "Выпуклые многоугольники. Диагональ. Периметр"
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  {
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    "chapter_slug": "geometry-8-ch1",
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    "grade": 8,
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p3",
    "num": "§ 3",
    "title": "Сумма внешних углов выпуклого многоугольника"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p4",
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    "title": "Параллелограмм"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p5",
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    "title": "Свойства параллелограмма"
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  {
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    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p6",
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    "title": "Признаки параллелограмма"
  },
  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p7",
    "num": "§ 7",
    "title": "Прямоугольник. Свойство диагоналей"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p8",
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    "title": "Признак прямоугольника"
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  {
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    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p9",
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    "title": "Ромб. Свойство диагоналей ромба. Признаки ромба"
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  {
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    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p10",
    "num": "§ 10",
    "title": "Квадрат. Свойства квадрата"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p11",
    "num": "§ 11",
    "title": "Теорема Фалеса. Деление отрезка на равные части"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p12",
    "num": "§ 12",
    "title": "Свойство медиан треугольника"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p13",
    "num": "§ 13",
    "title": "Свойство средней линии треугольника"
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  {
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    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p14",
    "num": "§ 14",
    "title": "Трапеция. Свойство средней линии"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch1",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p15",
    "num": "§ 15",
    "title": "Свойство углов и диагоналей равнобедренной трапеции"
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  {
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    "chapter_slug": "geometry-8-ch1",
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    "grade": 8,
    "para_id": "p16",
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    "title": "Признаки равнобедренной трапеции"
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    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p1",
    "num": "§ 1",
    "title": "Площадь квадрата"
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    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p2",
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    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p3",
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    "title": "Площадь параллелограмма"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p4",
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p5",
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    "title": "Площадь трапеции"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p6",
    "num": "§ 6",
    "title": "Площадь ромба"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p7",
    "num": "§ 7",
    "title": "Площадь прямоугольного треугольника"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p8",
    "num": "§ 8",
    "title": "Высота, проведённая к гипотенузе"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p9",
    "num": "§ 9",
    "title": "Треугольники с общей высотой"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p10",
    "num": "§ 10",
    "title": "Свойства медианы для площадей"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p11",
    "num": "§ 11",
    "title": "Теорема Пифагора"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p12",
    "num": "§ 12",
    "title": "S и h равностороннего треугольника"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p13",
    "num": "§ 13",
    "title": "Диагональ квадрата"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p14",
    "num": "§ 14",
    "title": "Обратная теорема Пифагора"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch2",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p15",
    "num": "§ 15",
    "title": "Пифагоровы тройки"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch3",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p1",
    "num": "§ 1",
    "title": "Теорема Фалеса (обобщённая)"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch3",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p2",
    "num": "§ 2",
    "title": "Деление отрезка в отношении m : n"
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  {
    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch3",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p3",
    "num": "§ 3",
    "title": "Определение подобных треугольников"
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    "chapter_slug": "geometry-8-ch3",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p4",
    "num": "§ 4",
    "title": "Свойство прямой, параллельной стороне треугольника"
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    "chapter_slug": "geometry-8-ch3",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p5",
    "num": "§ 5",
    "title": "Первый признак подобия. Следствие"
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    "chapter_slug": "geometry-8-ch3",
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    "para_id": "p6",
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    "title": "Второй признак подобия"
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    "chapter_slug": "geometry-8-ch3",
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    "grade": 8,
    "para_id": "p7",
    "num": "§ 7",
    "title": "Третий признак подобия"
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    "chapter_slug": "geometry-8-ch3",
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    "para_id": "p8",
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    "title": "Свойство биссектрисы треугольника"
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    "chapter_slug": "geometry-8-ch3",
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    "grade": 8,
    "para_id": "p9",
    "num": "§ 9",
    "title": "Отношение площадей подобных треугольников"
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    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
    "para_id": "p1",
    "num": "§ 1",
    "title": "Касательная. Признак касательной"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
    "para_id": "p2",
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    "title": "Свойство касательной"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch4",
    "subject": "geometry",
    "grade": 8,
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    "title": "Свойство касательных из одной точки"
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    "chapter_slug": "geometry-8-ch4",
    "subject": "geometry",
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    "para_id": "p4",
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    "title": "Построение касательной"
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    "chapter_slug": "geometry-8-ch4",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p5",
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    "title": "Свойство окружностей, вписанных в угол"
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    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
    "para_id": "p6",
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    "title": "Взаимное расположение окружностей"
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    "chapter_slug": "geometry-8-ch4",
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    "para_id": "p7",
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    "title": "Длина общей внешней касательной"
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    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
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    "title": "Центральный угол. Градусная мера дуги. Вписанный угол"
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    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
    "para_id": "p9",
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    "title": "Свойство вписанного угла"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch4",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p10",
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    "title": "Вписанные углы, опирающиеся на одну дугу"
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    "chapter_slug": "geometry-8-ch4",
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    "title": "Вписанный угол, опирающийся на диаметр"
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    "book": "geometry-8",
    "chapter_slug": "geometry-8-ch4",
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    "grade": 8,
    "para_id": "p12",
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    "title": "Угол между касательной и хордой"
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    "chapter_slug": "geometry-8-ch4",
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    "chapter_slug": "geometry-8-ch4",
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    "title": "Угол между секущими"
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    "chapter_slug": "geometry-8-ch4",
    "subject": "geometry",
    "grade": 8,
    "para_id": "p15",
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    "title": "Свойство пересекающихся хорд"
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    "chapter_slug": "geometry-8-ch4",
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    "para_id": "p16",
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    "title": "Свойство касательной и секущей"
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    "para_id": "p1",
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    "title": "Рациональная дробь"
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    "title": "Основное свойство дроби"
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    "num": "§ 3",
    "title": "Сложение и вычитание"
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    "title": "Умножение и деление"
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    "title": "Преобразование выражений"
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    "title": "Функция числового аргумента"
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    "title": "Свойства функции"
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    "title": "Чётные и нечётные функции"
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    "grade": 9,
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    "title": "Сдвиги графиков"
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    "grade": 9,
    "para_id": "p10",
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    "title": "Дробно-рациональные уравнения"
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    "title": "Системы нелинейных уравнений"
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    "title": "Уравнение окружности"
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    "para_id": "p13",
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    "title": "Метод интервалов"
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    "grade": 9,
    "para_id": "p14",
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    "title": "Числовая последовательность"
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    "grade": 9,
    "para_id": "p15",
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    "title": "Арифметическая прогрессия"
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  {
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    "chapter_slug": "algebra-9-ch4",
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    "grade": 9,
    "para_id": "p16",
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    "title": "Сумма арифм. прогрессии"
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    "title": "Геометрическая прогрессия"
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    "grade": 9,
    "para_id": "p18",
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    "title": "Сумма геом. прогрессии"
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  {
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    "chapter_slug": "algebra-9-ch4",
    "subject": "algebra",
    "grade": 9,
    "para_id": "p19",
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    "title": "Бесконечно убывающая"
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    "chapter_slug": "geometry-9-ch1",
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    "grade": 9,
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    "title": "sin, cos, tg, ctg острого угла"
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  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch1",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p2",
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    "title": "Решение прямоугольного треугольника"
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    "chapter_slug": "geometry-9-ch1",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p3",
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    "title": "Тригонометрические формулы"
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    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch1",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p4",
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    "title": "sin, cos, tg, ctg тупого угла"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch1",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p5",
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    "title": "Формулы площади"
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    "chapter_slug": "geometry-9-ch1",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p6",
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    "title": "Среднее геометрическое"
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    "chapter_slug": "geometry-9-ch2",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p7",
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    "title": "Описанная и вписанная окружности треугольника"
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  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch2",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p8",
    "num": "§ 8",
    "title": "Окружности прямоугольного треугольника"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch2",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p9",
    "num": "§ 9",
    "title": "Вписанные и описанные четырёхугольники"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch3",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p10",
    "num": "§ 10",
    "title": "Теорема синусов"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch3",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p11",
    "num": "§ 11",
    "title": "Теорема косинусов"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch3",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p12",
    "num": "§ 12",
    "title": "Формула Герона. Решение треугольников"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch4",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p13",
    "num": "§ 13",
    "title": "Правильные многоугольники"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch4",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p14",
    "num": "§ 14",
    "title": "Формулы радиусов"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch4",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p15",
    "num": "§ 15",
    "title": "Треугольник, квадрат, шестиугольник"
  },
  {
    "book": "geometry-9",
    "chapter_slug": "geometry-9-ch4",
    "subject": "geometry",
    "grade": 9,
    "para_id": "p16",
    "num": "§ 16",
    "title": "Длина окружности и площадь круга"
  }
]