A pyramid
A triangular pyramid.
Tetrahedron
a triangular pyramid.
A regular tetrahedron (triangular pyramid).
A pyramid
Triangular prism * * * * * No. It is a triangular pyramid or a tetrahedron. A triangular prism has 6 vertices and 5 faces.
A triangular pyramid.
triangular pyramid
There is no 3-d shape with 4 and 1 = 5 triangular faces.
Tetrahedron
A triangular pyramid.
triangular pyramid
a triangular pyramid.
A triangular based pyramid (tetrahedron) has 4 triangular faces, 6 edges and 4 vertices.
A shape that has some triangular faces is a pyramid.
a triangular pyramid has six edges and four triangular shaped faces