**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 “.

There are 9 straight sides and 9 vertices connecting these straight sides in a nonagon. The Sum of all the interior angles of a nine-sided polygon is equal to **1260 degrees**.

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

**Types of (Nonagon) 9-Sided Shape**

There are two types of **nonagon.**

**Regular Nonagon****Irregular Nonagon**

#### **Regular Nonagon**

- It is a two-dimensional shape.
- It has nine vertices.
- Each interior angle is at 140^\circ and the sum of these interior angles is 1260^\circ.
- It’s all straight lines that have equal lengths.
- It has an exterior angle equal to 360 degrees.

**Irregular Nonagon**

- The sum of all of its interior angles is 1260^\circ degrees.
- Angles at varying degrees.
- It is a nine-sided, two-dimensional shape
- Additionally, it has straight lines
- The sides are not equal in length.