Question

The base of a pyramid has n sides. Write and expression for the number of faces of the pyramid

Answer 1

Remark

The number of faces reaching out in the 3rd dimension of the pyramid = the number of edges on the base.

Givens

Number of edges (or sides on the base)= e

Number of faces = f

Formula

F = e + 1 Don't forget that the base is also a face.