# Definition of 'polygon'

noun

a closed plane figure bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices. The sum of the interior angles is (n–2) × 180° for n sides; the sum of the exterior angles is 360°. A regular polygon has all its sides and angles equal. Specific polygons are named according to the number of sides, such as triangle, pentagon, etc

Collins English Dictionary. Copyright © HarperCollins Publishers

## Word origin of 'polygon'

C16: via Latin from Greek polugōnon figure with many angles noun

a closed plane figure consisting of straight lines

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.

## Word Lists

Mathematical terms## Trends of 'polygon'

View usage over:

## Source

Definition of

**polygon**from the Collins English DictionaryWe take a look at the etymology behind the word 'election' on the run up to the UK General Election in June

Language expert Ian Brookes looks at the word 'election' and its origins.

Read more

Join the Collins community

All the latest wordy news, linguistic insights, offers and competitions every month.

Read more

## Comments