How many edges are there on a square pyramid?

A square based pyramid has 5 corners (or vertices) - one for each of the corners of the square base and one at the top (or apex).

It has 8 edges. Four around the base, then four more, one from each corner, meeting together at the top.

It also has 5 faces; the square base and four triangular ones - one from each side of the base to the top.
A square based pyramid has 8 edges, 5 faces and 5 vertices