# Pythagorean theorem

## Pythagorean theorem

noun Geometry.
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.

Origin:
1905–10

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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American Heritage
Science Dictionary
 Pythagorean theorem   (pĭ-thāg'ə-rē'ən)  Pronunciation Key  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 c2 = a2 + b2, where c is the length of the hypotenuse and a and b the lengths of the other two sides.
The American Heritage® Science Dictionary
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American Heritage
Cultural Dictionary
Pythagorean theorem [(puh-thag-uh-ree-uhn, peye-thag-uh-ree-uhn)]

The theorem in geometry that, in a triangle with one right angle, usually called a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Note: The theorem is often expressed a2 + b2 = c2.
Note: The simplest whole number expression of this theorem is called the 3, 4, 5 triangle. In a right triangle, if one side measures three units, and the second side measures four units, the hypotenuse must measure five units because 32 + 42 = 52; that is, 9 + 16 = 25.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
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FOLDOC
Computing Dictionary

### Pythagorean Theorem definition

Pythagoras's Theorem

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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