a triangular pyramid
A triangular pyramid.
a triangular pyramid.
Pyramid, but to be exact it would be a Triangular Pyramid ;) * * * * * To be exact ... but WRONG! A triangular pyramid has 4 faces and 4 vertices! A shape with 5 faces and vertices is a quadrilateral based pyramid - of which a special case would be a square based pyramid.
Square based pyramid and Triangular based pyramid * * * * * A square based pyramid has 5 faces!