#### Nonagon

__Definition of Nonagon__

- A polygon with nine sides is called a nonagon.

__Examples of Nonagon__

- The following is a nonagon. All its sides do not measure the same.

- The following is a regual nonagon. All its sides measure the same.

__Solved Example on Nonagon__

What is the perimeter of a regular nonagon of side 8 cm?

**Choices:**

A. 92 cm

B. 77 cm

C. 72 cm

D. 82 cm

**Correct Answer: C**

**Step 1: **The perimeter of a regular polygon of n sides with each side measuring *x* is *nx*.

**Step 2: **A nonagon has 9 sides. All sides of a regular nonagon measure the same.

**Step 3:** So, the perimeter of the nonagon = *n × 8*.

**Step 4:** = 9 8 = 72 cm [Substituting *n* = 9 and *x* = 8.]

__Related Terms for Nonagon__

__Additional Links for Nonagon__