Pythagorean theorem

noun

Definition of Pythagorean theorem 

: a theorem in geometry: the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides

First Known Use of Pythagorean theorem

1743, in the meaning defined above

Keep scrolling for more

Learn More about Pythagorean theorem

Share Pythagorean theorem

Statistics for Pythagorean theorem

Look-up Popularity

Time Traveler for Pythagorean theorem

The first known use of Pythagorean theorem was in 1743

See more words from the same year

Comments on Pythagorean theorem

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

WORD OF THE DAY

amusing and light sparring with words

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Bee Cubed

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!