# Tetrahedron

A tetrahedron is a space figure with four triangular faces. The shape is a regular tetrahedron if all the faces are congruent equilateral triangles.

Also called triangular pyramid.

See also polyhedron.

A tetrahedron is a space figure with four triangular faces. The shape is a regular tetrahedron if all the faces are congruent equilateral triangles.

Also called triangular pyramid.

See also polyhedron.

Shape