Pythagorean theorem

American  

noun

Geometry.

1. the theorem that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

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Pythagorean theorem Scientific  

/ pĭ-thăg′ə-rē′ən /

1. A theorem stating that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other sides. It is mathematically stated as c ² = a ² + b ², where c is the length of the hypotenuse and a and b the lengths of the other two sides.

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Etymology

Origin of Pythagorean theorem

First recorded in 1905–10