A Tour of the Platonic Solids
By Deb Russell, About.com Guide
The icosahedron is bounded by twenty equilateral triangles. The number of vertices is 3. The number of polygons meeting at a vertex is 5. The number of faces for the icosahedron is 20. The the number of edges of the icosahedron is 30. The the number of vertices of the icosahedron is 12.
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- A Tutorial on the Platonic Solids
- The Tetrahedron
- The Hexahedron
- The Octahedron
- The Dodecahedron
- The Icosahedron
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