A Tour of the Platonic Solids
By Deb Russell, About.com
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.
Prev
- A Tutorial on the Platonic Solids
- The Tetrahedron
- The Hexahedron
- The Octahedron
- The Dodecahedron
- The Icosahedron
Suggested Reading
A Special Thanks:
Explore Mathematics
Must Reads
About.com Special Features
A Smarter Future
Tips that will help finance your education, excel in the classroom, and advance your career. More >
How to Ace the GRE
Being well prepared is the first step; here are more essential suggestions. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.