exterior angle

noun

Definition of exterior angle

1 : the angle between a side of a polygon and an extended adjacent side
2 : an angle formed by a transversal as it cuts one of two lines and situated on the outside of the line

Illustration of exterior angle

Illustration of exterior angle

ega, egb, fhc, fhd exterior angle 2

First Known Use of exterior angle

1756, in the meaning defined at sense 1

Keep scrolling for more

Learn More about exterior angle

Time Traveler for exterior angle

Time Traveler

The first known use of exterior angle was in 1756

See more words from the same year

Statistics for exterior angle

Cite this Entry

“Exterior angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exterior%20angle. Accessed 7 Jul. 2020.

Comments on exterior angle

What made you want to look up exterior angle? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!