# FAQ: What Is Dodecagon In Math?

## Why is it called a dodecagon?

The -gon part of dodecagon should clue you in that this is a geometric figure. That leaves the dodeca- part, which means 12. A dodecagon is a polygon, just like a pentagon (five sides) and a hectogon (100 sides). The Greek roots make 12 by combining do (2) and deca (10).

## What is a 10 sided shape called?

In geometry, a decagon (from the Greek δέκα déka and γωνία gonía, “ten angles”) is a ten- sided polygon or 10 -gon.

## What is the meaning of Dodecagon?

: a polygon of 12 angles and 12 sides.

## How do you find the area of a 12-sided polygon?

Area of a Regular Dodecagon For a regular dodecagon with sides s, the area formula is: A = 3 × (s)^2 × (2 + √3)

## What is a 9 sided shape called?

A nonagon is also called enneagon, which is derived from a Greek word called enneagonon, which means nine corners. 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.

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## What is 11 sided shape called?

In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka “eleven” and –gon “corner”, is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim “eleven”.)

## What is a 50 sided shape called?

In geometry, a pentacontagon or pentecontagon or 50 -gon is a fifty- sided polygon.

## What is 12 sided shape called?

In geometry, a dodecagon or 12 -gon is any twelve- sided polygon.

## What is 7 sided shape called?

A six- sided shape is a hexagon, a seven – sided shape a heptagon, while an octagon has eight sides … The names of polygons are derived from the prefixes of ancient Greek numbers.

## What is a 20 sided shape called?

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

## What’s a 13 sided shape called?

A 13 – sided polygon, sometimes also called the triskaidecagon.

## What is a 100 sided shape called?

In geometry, a hectogon or hecatontagon or 100 -gon is a hundred – sided polygon. The sum of all hectogon’s interior angles are 17640 degrees.

## What is a 14 sided shape called?

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