How many edges and faces do a pyramid have?

A pyramid has a number of edges and faces that depends on the shape of its base. For a pyramid with an n-sided polygonal base, it has n edges on the base, n edges connecting the apex to each vertex of the base, and a total of n + 1 faces (n triangular faces and 1 base face). For example, a square pyramid (with a square base) has 8 edges and 5 faces.