Tetrahedron
- Posted by Jonboy1785 (0)
Created on 09-11-2008
Reviews: 1 
Comments: 0 
Views: 30
Item Description
A tetrahedron (plural: tetrahedra) is a polyhedron composed of four triangular faces, three of which meet at each vertex. A regular tetrahedron is one in which the four triangles are regular, or "equilateral", and is one of the Platonic solids.
The tetrahedron is one kind of pyramid, which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as triangular pyramid.
Like all convex polyhedra, a tetrahedron can be folded from a single sheet of paper.
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- Jonboy1785
- 26 reviews since
- Sep 3, 2008
Tetrahedron is a shape sort of like a pyramid. I kind of like how it looks but really don't see the use of it unless you count building pyaminds, we don't build them now. Strange shape but kind of neat too.
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