# What is a 16 sided figure called?

## What is a 16 sided figure called?

hexakaidecagon
In geometry, a polygon or a geometrical shape with 16 sides is called a hexakaidecagon or hexadecagon. This is also known as 16-gon. The measure of each internal angle of a regular hexadecagon is 157.5 degrees.

## What is the name of a 21 sided shape?

henicosagon
What is the name of a polygon with…?

# Name of the Polygon + Geometric Drawing
20 sides icosagon
21 sides henicosagon
22 sides doicosagon
23 sides triaicosagon

What’s 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 22 sided shape called?

Systematic polygon names

Ones Twenties
20
1 hena- 21
2 di- 22
3 tri- 23

### What is a 99 sided shape called?

nonacontakainonagon
What is a 99 sided shape called? In geometry, an enneacontagon or enenecontagon or 90-gon is a ninety-sided polygon. Thus, the 99 sided shape is called nonacontakainonagon or enneacontanonagon. Here, enneaconta is the prefix for the number of sides numbered from 90 to 99.

What is a 80 sided shape called?

Octacontagon
Other polygons

Polygon Name n (sides)
80 – sided polygon Octacontagon 80
90 – sided polygon Enneacontagon 90
100 – sided polygon Hectagon 100
1,000 – sided polygon Chiliagon 1,000

#### What’s a 666 sided shape called?

Chiliagon

Regular chiliagon
Coxeter–Dynkin diagrams
Symmetry group Dihedral (D1000), order 2×1000
Internal angle (degrees) 179.64°
Properties Convex, cyclic, equilateral, isogonal, isotoxal

#### What is a 0 sided shape called?

Polygons

Polygon Name Number of Sides Number of Diagonals
Triangle 3 0