A rectangular pyramid (four-sided base) has 5 faces and 5 vertices.
5 FIVE five 4+1=5
A triangular pyramid.
A pyramid is a four-sided 3D triangle
A pyramid which has a total of 5 faces is a quadrilateral based pyramid.
A five sided pyramid! Ha!
there are 5
well actually it is a prism. If you mean a 5 sided pyramid with the 6 side being the bottom it would be called a Pentagonal Pyramid