diff --git a/frontend/textbooks/geometry_7_ch1.html b/frontend/textbooks/geometry_7_ch1.html
index 50e3f51..e024c03 100644
--- a/frontend/textbooks/geometry_7_ch1.html
+++ b/frontend/textbooks/geometry_7_ch1.html
@@ -346,6 +346,7 @@ function buildParaSelector(){
     card.addEventListener('click', ()=>goTo(p.id));
     g.appendChild(card);
   });
+  if(window.renderMathInElement) try{ renderMath(g); }catch(e){}
 }
 
 const BUILT=new Set();
@@ -1588,6 +1589,7 @@ function buildFinal1(){
       +'<div class="feedback" id="boss-'+idx+'-fb"></div>'
       +'</div>';
   }).join('');
+  if(window.renderMathInElement) try{ renderMath(cont); }catch(e){}
 
   BOSSES.forEach((b,idx)=>{
     function show(){
diff --git a/frontend/textbooks/geometry_7_ch2.html b/frontend/textbooks/geometry_7_ch2.html
index bdcb550..ebccbc4 100644
--- a/frontend/textbooks/geometry_7_ch2.html
+++ b/frontend/textbooks/geometry_7_ch2.html
@@ -343,6 +343,7 @@ function buildParaSelector(){
     card.addEventListener('click', ()=>goTo(p.id));
     g.appendChild(card);
   });
+  if(window.renderMathInElement) try{ renderMath(g); }catch(e){}
 }
 
 const BUILT=new Set();
@@ -1529,6 +1530,7 @@ function buildFinal2(){
       +'<div class="feedback" id="boss-'+idx+'-fb"></div>'
       +'</div>';
   }).join('');
+  if(window.renderMathInElement) try{ renderMath(cont); }catch(e){}
 
   BOSSES.forEach((b,idx)=>{
     function show(){
diff --git a/frontend/textbooks/geometry_7_ch3.html b/frontend/textbooks/geometry_7_ch3.html
index 1eb394d..bd796e6 100644
--- a/frontend/textbooks/geometry_7_ch3.html
+++ b/frontend/textbooks/geometry_7_ch3.html
@@ -338,6 +338,7 @@ function buildParaSelector(){
     card.addEventListener('click', ()=>goTo(p.id));
     g.appendChild(card);
   });
+  if(window.renderMathInElement) try{ renderMath(g); }catch(e){}
 }
 
 const BUILT=new Set();
@@ -1248,6 +1249,7 @@ function buildFinal3(){
       +'<div class="feedback" id="boss-'+idx+'-fb"></div>'
       +'</div>';
   }).join('');
+  if(window.renderMathInElement) try{ renderMath(cont); }catch(e){}
 
   BOSSES.forEach((b,idx)=>{
     function show(){
diff --git a/frontend/textbooks/geometry_7_ch4.html b/frontend/textbooks/geometry_7_ch4.html
index 5caf990..43f377e 100644
--- a/frontend/textbooks/geometry_7_ch4.html
+++ b/frontend/textbooks/geometry_7_ch4.html
@@ -334,6 +334,7 @@ function buildParaSelector(){
     card.addEventListener('click', ()=>goTo(p.id));
     g.appendChild(card);
   });
+  if(window.renderMathInElement) try{ renderMath(g); }catch(e){}
 }
 
 const BUILT=new Set();
@@ -1616,6 +1617,7 @@ function buildFinal4(){
       +'<div class="feedback" id="boss-'+idx+'-fb"></div>'
       +'</div>';
   }).join('');
+  if(window.renderMathInElement) try{ renderMath(cont); }catch(e){}
 
   BOSSES.forEach((b,idx)=>{
     function show(){