A Tour of the Platonic Solids
By Deb Russell, About.com
The octahedron is bounded by eight equilateral triangles. The number of vertices is 3. The number of polygons meeting at a vertex is 4. The number of faces for the octahedron is 8. The the number of edges of the octahedron is 12. The the number of vertices of the octahedron is 6.
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- A Tutorial on the Platonic Solids
- The Tetrahedron
- The Hexahedron
- The Octahedron
- The Dodecahedron
- The Icosahedron
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