Pythagorean theorem
/paɪˌθæɡəˈriːən ˈθiːərəm/
EN
A fundamental geometric principle stating that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) equals the sum of the squares of the lengths of the other two sides.
Middle school students learn to use the Pythagorean theorem to calculate unknown side lengths of right triangles.
Etymology
Named after the ancient Greek philosopher and mathematician Pythagoras of Samos, who is traditionally credited with proving the relationship, though the relationship was known to earlier Babylonian and Indian mathematicians.
Translations
简体中文
勾股定理,毕达哥拉斯定理
繁體中文
勾股定理,畢氏定理,畢達哥拉斯定理
日本語
ピタゴラスの定理,三平方の定理
한국어
피타고라스 정리
Deutsch
Satz des Pythagoras,Pythagoreischer Lehrsatz
Español
teorema de Pitágoras
Português
teorema de Pitágoras
Français
théorème de Pythagore
Tiếng Việt
định lý Pythagoras