How to show diagonals using plastic rods
Pack of rods for showing diagonals
 
Cube with a rod inserted through the opposite vertices and showing a diagonal
Cube with four rods inserted through corresponding opposite vertices and showing four cube's diagonals
  
 
diagonal originating at one vertex
diagonals through all vertices
  
   
Diagonals in open cube

 

 
   
Open cube after securing the diagonals with white velcro markers
  
 
pentagonal pyramid with 2 diagonals
diagonals in pentagonal prism
  
 
diagonals originating at one vertex
diagonals through all vertices
  

 

 

      
Show diagonals in these solids:
  
       
 
rectangular pyramid
 triangular bipyramidtrianglular prism  
 

 

 

 

 

    
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