A triangular pyramid.
Wiki User
∙ 8y agoA triangle-based pyramid.
a tetrahedron
tetrahedron
A tetrahedron.
No. The faces of a tetrahedron are equilateral triangles, but none of the faces is parallel to another one of the faces -- they could not be parallel, since by the definition of a tetrahedron, all the faces intersect(!) and parallel planes do not intersect.
A tetrahedron.
A tetrahedron.
A tetrahedron.
A triangle-based pyramid.
a tetrahedron
As answered on another link, it's a tetrahedron, provided the faces are equal
The name is derived from Greek roots, and so the name, not surprisingly, is "tetrahedron".
Tetrahedron. http://en.wikipedia.org/wiki/Tetrahedron
tetrahedron
tetrahedron
A tetrahedron.
No. The faces of a tetrahedron are equilateral triangles, but none of the faces is parallel to another one of the faces -- they could not be parallel, since by the definition of a tetrahedron, all the faces intersect(!) and parallel planes do not intersect.