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Polyhedrons
- A polyhedron is a solid that has only flat faces
- (from Greek poly- meaning "many" and -edron meaning "face").
- So, to be a polyhedron there should be no curved surfaces.
That's Interesting
- Counting Faces, Vertices and Edges
The number of faces plus the number of vertices minus the number of edges equals 2
This can be written neatly as a little equation:
F + V - E = 2
Examples of the above equations
This cube has:
- 6 Faces
- 8 Vertices (corner points)
- 12 Edges
Example 2
This prism has:
- 5 Faces
- 6 Vertices (corner points)
- 9 Edges
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