Stage: 2, 3 and 4 Challenge Level: 
In a recent workshop, students made these solids.
Can you think of reasons why I might have grouped the solids in the way I have before taking the pictures?
If you want to find out more about these solids, their names and how they were made, you might like to read the article on Angle Deficiency.
Solids. Polyhedra. Networks/Graph Theory. Mathematical reasoning & proof. Tetrahedra. Regular polyhedra. Topology. Euler's formula.
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