Pythagorean theorem
For a right triangle, the square of the hypotenuse equals the sum of the squares of the two legs. It is used to find a missing side length of a right triangle and to test whether a triangle is right-angled.
a^2 + b^2 = c^2What the symbols mean
| length of one leg (cathetus) of the right triangle | |
| length of the other leg (cathetus) of the right triangle | |
| length of the hypotenuse, the side opposite the right angle |
About this formula
- FieldMathematics
- TopicEuclidean geometry
- LevelHigh school
- Also calledPythagoras theorem, Pythagorean proposition, right triangle side relation, hypotenuse formula, a squared plus b squared equals c squared, Pythagoras' theorem
- SourceWikidata Q11518
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