
Pythagorean theorem
    
    WiktionaryText
        Etymology
Named after Pythagoras, from , Greek mathematician and philosopher who by tradition is credited with theorem’s discovery and proof.
Proper noun
- A mathematical theorem which states that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of those of the other two other sides.
 - A generalization of the Pythagorean theorem (1) to Hilbert spaces
 

