# How to find the longest side of a triangle

Right triangles have a right angle (90 degrees), and the side opposite this angle is known as the hypotenuse, or the longest side of the triangle

## How to find the side length of a right triangle

When you look at the equation , you can think of this as the length of the side a Pythagorean equation to find the length of the hypotenuse of a triangle

## Hypotenuse

Longest side of a right triangle is called its hypotenuse. It can be calculated without any instrument like You know how much the others are

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