# Pythagorean Theorem

The Pythagorean theorem is an equation relating the lengths of the sides of a right triangle as *a squared plus b squared equals c squared, where c is the length of the hypotenuse.
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Pythagorean theorem is a middle school-level concept. It is listed in the California State Standards for Grade 7.

### Prerequisites

Hypotenuse: | The hypotenuse is the longest side of of a right triangle, which is always opposite the right angle. |

Right Triangle: | A right triangle is a triangle that has a right angle. The Pythagorean Theorem is a relationship among the sides of a right triangle. |

Trigonometry: | Trigonometry is the study of angles and of the angular relationships of planar and three-dimensional figures. |