# What is a 10 sided shape called?

In geometry, a polygon is a closed two-dimensional figure with three or more straight lines.

## Answer: A 10 sided polygon is called a decagon.

The Greek word ‘Polygon’ consists of poly meaning ‘many’ and gon meaning ‘angle.’

**Explanation:**

A decagon is a ten-sided polygon with ten vertices and ten angles.

Interior angle of any regular polygon = 180 [(n - 2)/n]

Interior angle of a regular decagon = 180 (10 - 2)/10 = 144°

The sum of all the interior angles of a regular decaagon is 1440°.

### Thus, a 10 sided polygon is called a decagon.

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