A pyramid with an irregular pentagon base.
Pyramid
A triangular pyramid has 4 faces 4 vertices and 6 edges.
It is the vertex at which all the triangular faces meet.
No, it has 4 faces and 1 VERTEX
12
A tetrahedron (4 faces) or triangular bipyramid (5 faces).
Triangular pyramid.
pyramid
pyramid
A triangular prim has 5 faces, 6 vertices and 9 edges. A base is the same as a face.
A triangular prism, which has 6 vertices and 5 faces.
5 faces (sides) 9 edges 6 vertices