9 Sided Polygon

What is a nine-sided shape?

With nine straight sides that meet at nine corners make a polygon that is called a Nonagon. Nonagon is a 2D nine-sided shape that belongs to the family. The word  “nonagon ” comes from the Latin word  “nona “, meaning nine, and  “gon “, meaning sides. So it literally means  “nine-sided shape “.

In Greek, a nonagon is called an enneagon, which means “nine corners”.

9 Sided Polygon

Types of Nonagon

There are two types of a nonagon.

  • Regular Nonagon
  • Irregular Nonagon

Properties Regular Nonagon

  • It is a two-dimensional shape.
  • It has nine vertices.
  • Each interior angle is at 140 and sum of these interior angles is 1260.
  • It’s all straight lines have equal length.
  • It has an exterior angle equal to 360.

Properties of Irregular Nonagon

  • The sum of all of its interior angles is 1260o
  • Angles at varying degrees.
  • It is a nine-sided, two-dimensional shape
  • Additionally, it has straight lines
  • Sides are not equal in length
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Azhar Ali

Azhar Ali

I graduated in Mathematics from the University of Sargodha, having master degree in Mathematics.

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