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.

                          

Video Examples: Nonagon

Solved Example on Nonagon

Ques: 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

Solution:

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 Worksheet

• Graphing-Linear-Functions-for-a-Given-Domain-Gr-8
• Multiplication-and-Division-of-Decimals-using-Models-Gr-5
• Adding-Decimals-to-Hundredths-Gr-5
• Operations-on-Decimals-Gr-6
• Word-Problems-on-Systems-of-Equations-Gr-8