A Tour of the Platonic Solids
By Deb Russell, About.com
The tetrahedron is bounded by four equilateral triangles. The number of vertices is 3. The number of polygons meeting at a vertex is 3. The number of faces for the tetrahedron is 4. The the number of edges of the tetrahedron is 6. The the number of vertices of the tetrahedron is 4.
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- A Tutorial on the Platonic Solids
- The Tetrahedron
- The Hexahedron
- The Octahedron
- The Dodecahedron
- The Icosahedron
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