diff --git a/frontend/textbooks/geometry_8_ch1.html b/frontend/textbooks/geometry_8_ch1.html
index 19b135d..dc38ee9 100644
--- a/frontend/textbooks/geometry_8_ch1.html
+++ b/frontend/textbooks/geometry_8_ch1.html
@@ -3751,9 +3751,11 @@ function buildP10(){
a
a√2
-
+
+
+
P = 4a
diff --git a/frontend/textbooks/geometry_8_ch2.html b/frontend/textbooks/geometry_8_ch2.html
index aa51628..a5c3440 100644
--- a/frontend/textbooks/geometry_8_ch2.html
+++ b/frontend/textbooks/geometry_8_ch2.html
@@ -849,7 +849,7 @@ function buildP2(){
P = 2(6+4) = 20
-
+