Pythagorean theorem

noun

: 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

Word History

First Known Use

1743, in the meaning defined above

Time Traveler
The first known use of Pythagorean theorem was in 1743

Dictionary Entries Near Pythagorean theorem

Cite this Entry

“Pythagorean theorem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pythagorean%20theorem. Accessed 1 Dec. 2022.

Kids Definition

Pythagorean theorem

noun

: 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
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