Tetrahedron

A tetrahedron is a 3-dimensional simplex. Its Bowers acronym is "tet".
===Variants===
The tetrahedron can be seen as a triangle pyramid where all the sides are equal. It is also a line antiprism.
===Properties===
Two tetrahedra can be inscribed in a cube such that no vetex is used twice.
===Structure===
As a triangular pyramid, the tetrahedron is composed of a point that grows into a triangle. It has 3triangles around each vertex.
===See also===
Category:Shapes
Category:List of 3rd dimension
Category:Simplex
Category:Polyhedra
Category:Regular polyhedra