That would be a triangular pyramid.
A triangular prism can have a square or triangular base, but faces are normally triangles. (I think)
It depends on the shape of the base, but yes it has at least 3 triangular faces!(yes)
A tetrahedron.
Triangular Pyramid
Triangular Pyrimid
It is a pyramid
That would be a triangular pyramid.
A triangular prism can have a square or triangular base, but faces are normally triangles. (I think)
It depends on the shape of the base, but yes it has at least 3 triangular faces!(yes)
A tetrahedron.
Triangular Pyramid
All except the base are always triangles; the shape of the base gives the name to the pyramid; eg a pentagonal pyramid has a pentagon as the base and five triangular faces; a triangular pyramid has three triangular faces and also has a triangle for the base.
A pentagonal pyramid
tetrahedra (a pyramid with a triangular base)
A square pyramid.
hexagonal pyramid