4
Chat with our AI personalities
A tetrahedron (triangular pyramid).
A pyramid has a based that is a polygon such as a triangle or rectangle. The other sides of a pyramid consist of triangles, which are usually the same size.
A triangle based pyramid.
A pyramid can have 4 or more faces. A pyramid, with a n-sided polygon as base will have n+1 faces. The polygon with the least number of sides is a triangle and a triangular pyramid (tetrahedron) has 4 faces. A square based pyramid has 5 faces, and so on.
Rectangular-based pyramid