# What is a nonagon in shapes?

## What is a nonagon in shapes?

In geometry, a nonagon (/ˈnɒnəɡɒn/) or enneagon (/ˈɛniəɡɒn/) is a nine-sided polygon or 9-gon. The name nonagon is a prefix hybrid formation, from Latin (nonus, “ninth” + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.

How many faces does a 3d nonagon have?

You also know that a 9-sided figure is a nonagon. Next, you know that if the base has 9 edges, there are 9 side faces.

How many degrees is a nonagon?

1260°
A nonagon consists of 9 angles. The sum of angles of a nonagon is 1260°.

### Is a nonagon regular?

Nonagons are just one type of polygon that has nine sides. These are both examples of regular polygons, shapes with equal-length sides and equal angles and irregular polygons, shapes with unequal-length sides and angles.

What is a 10 sided shape?

decagon
In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°. A self-intersecting regular decagon is known as a decagram.

What is a 20 sided shape called?

icosagon
In geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

## What is a 9 sided shape called?

enneagon nonagon
List of n-gons by Greek numerical prefixes

Sides Names
7 heptagon septagon
8 octagon
9 enneagon nonagon
10 decagon

Is there a 9 sided shape?

A nine sided shape is a polygon called a nonagon. It has nine straight sides that meet at nine corners. The word nonagon comes from the Latin word “nona”, meaning nine, and “gon”, meaning sides.

What is a 28 sided shape called?

icosioctagon
In geometry, an icosioctagon (or icosikaioctagon) or 28-gon is a twenty eight sided polygon. The sum of any icosioctagon’s interior angles is 4680 degrees.

### How many sides are there in a nonagon?

A nonagon contains 9 straight sides and 9 vertices connecting these sides. The sum of all the interior angles of a nonagon is equal to 1260 degrees. The above figure shows the shape of a nonagon that has 9 sides.

When was the first use of the word nonagon?

The first use of the word nonagon dates back to the early 17th century, and has a Latin prefix (nona) and a Greek suffix (gon), making it a polygon with nine sides and nine angles.

What kind of construction is a nonagon hexagon?

Nonagon, a neusis construction, base is a hexagon with trisection of the angle according to Archimedes, animation, at the end 10 s break.

## What is the total measure of a nonagon?

A nonagon in which all sides are not equal and all angles are not equal. The measure of its angles are different but total sum of all its interior angles is always 1260°. A nonagon is also called enneagon, which is derived from a Greek word called enneagonon, which means nine corners.