tetrahedron
A triangular pyramid.
tetrahedron, a triangular pyramid
A di-tetrahedron.
the answer is tetrahedron
Tetrahedron
A triangular pyramid.
A triangular dipyramid.
Pyramid
tetrahedron, a triangular pyramid
A di-tetrahedron.
the answer is tetrahedron
Tetrahedron
A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.
A pyramid.
a triangular pyramid
rectangular pyramid
It is a three dimensional shape bounded by polygonal faces (a polyhedron) which has a uniform triangular cross section, parallel triangular bases, and the remaining faces are rectangular.