
Right Triangles
The Good Old Pythagorean Theorem

A right triangle has one 90° angle (angle B in the picture on the left) and a variety of oftenstudied formulas such as:

A Right Triangle's Hypotenuse
The hypotenuse is the largest side in a right triangle and is always opposite the right angle.
(Only right triangles have a hypotenuse). The other two sides of the triangle, AC and CB are referred to as the 'legs'.
In the triangle on the left, the hypotenuse is the side AB which is opposite the right angle,
.

Hypotenuse Calculator
Online tool calcualtes the hypotenuse ( or a leg) using the pythagorean theorem.
(Also draws a free downloadable picture of your right Triangle!)

