## What is the name of a polygon with 12 sides?

Table of Contents

A dodecagon is a 12-sided polygon. Several special types of dodecagons are illustrated above. In particular, a dodecagon with vertices equally spaced around a circle and with all sides the same length is a regular polygon known as a regular dodecagon.

What are the first 12 polygons?

Names of Polygons

Name Sides Interior Angle
Nonagon (or Enneagon) 9 140°
Decagon 10 144°
Hendecagon (or Undecagon) 11 147.273°
Dodecagon 12 150°

### What is the name of a 11 sided polygon?

A hendecagon is a shape with 11 sides and 11 vertices (corners). It has 11 angles inside it that add up to 1620°.

What are the names of all the polygon?

Types of Polygon With Sides 3 to 20

Name of the Polygons Sides Angle
Triangle (also called Trigon) 3 60°
Quadrilateral (also called Tetragon) 4 90°
Pentagon 5 108°
Hexagon 6 120°

#### What is a 12 sided shape called 3d?

dodecahedron
In geometry, a dodecahedron (Greek δωδεκάεδρον, from δώδεκα dōdeka “twelve” + ἕδρα hédra “base”, “seat” or “face”) or duodecahedron is any polyhedron with twelve flat faces. The most familiar dodecahedron is the regular dodecahedron with regular pentagons as faces, which is a Platonic solid.

What is the name of 20 sides of polygon?

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 13 sided polygon called?

Tridecagon
A 13-sided polygon, sometimes also called the triskaidecagon.

What is a 14 sided polygon called?

In geometry, a tetradecagon or tetrakaidecagon or 14-gon is a fourteen-sided polygon.

### What is the name of 10 polygon?

decagon
A decagon is a polygon that is easily identified by one key trait – it’s a 10 side shape with ten interior angles and ten vertices.

WHAT IS A 10000000 sided shape called?

A megagon or 1,000,000-gon is a polygon with one million sides (mega-, from the Greek μέγας, meaning “great”, being a unit prefix denoting a factor of one million). Regular megagon. A regular megagon.