**Definition of Lateral Faces**

- The faces that join the bases of a solid are called Lateral Faces.

**More about Lateral Faces**

- Lateral faces do not include the bases of a solid.

**Example of Lateral Faces**

- The figure given above is a hexagonal prism and it has six lateral faces and two bases.

**Solved Example on Lateral Faces**

How many lateral faces does a regular pentagonal prism have?

Choices:

A. 5

B. 7

C. 2

D. 6

Correct Answer: A

Solution:

Step 1:A regular pentagonal prism looks like the figure given below.

Step 2:It has two parallel and congruent pentagonal faces called bases.

Step 3:The faces that join the bases of a prism are called lateral faces.

Step 4:Five rectangles join the bases (pentagons) of a pentagonal prism.

Step 5:So, a regular pentagonal prism has 5 lateral faces.

**Related Terms for Lateral Faces**

- Base
- Face
- Prism
- Pyramid
- Solid