# What are the names of the 12 polygons?

## What are the names of the 12 polygons?

Polygons: How Many Sides?

3 triangle, trigon
10 decagon
11 hendecagon
12 dodecagon, duodecagon
13 triskaidecagon, tridecagon

## What are the names of polygons from 11 to 20?

Terms in this set (18)

• Three. Trigon or Triangle.
• Four. Tetragon or Quadrilateral.
• Five. Pentagon.
• Six. Hexagon.
• Seven. Heptagon.
• Eight. Octagon.
• Nine. Nonagon or Enneagon.
• Ten. Decagon.

What are the types of polygon and their names?

They are:

• Regular Polygons.
• Irregular Polygons.
• Concave Polygons.
• Convex Polygons.
• Trigons.
• Pentagon Polygons.
• Hexagon Polygons.

### How many polygons do we have?

Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. The name tells you how many sides the shape has. For example, a triangle has three sides, and a quadrilateral has four sides….Definition of a Polygon.

Shape # of Sides
Octagon 8
Nonagon 9
Decagon 10
n-gon n sides

### 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 polygon has 13 sides?

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

## What is a polygon with 12 sides?

dodecagon
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 is the 3 types of polygons?

Regular polygons (all the sides and angles measure the same) Irregular polygons (all the sides and angles measure different) Simple polygons (polygon does not intersect itself) Complex polygons (polygon intersects itself)

How are polygons named?

Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek-derived numerical prefix with the suffix -gon, e.g. pentagon, dodecagon. The triangle, quadrilateral and nonagon are exceptions.

### What is a regular polygon look like?

A polygon is called regular if it has equal sides and angles. Thus, a regular triangle is an equilateral triangle, and a regular quadrilateral is a square.

### What is a polygon for kids?

A polygon is a flat two-dimensional shape with straight sides that are fully closed. The sides must be straight, not curved. However, polygons can have any number of sides.