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Legs of a Right Triangle

Legs of a Right Triangle

One-page printable reference

See It in Action

Two examples of the idea done right—and one common look-alike that is not right.

EXAMPLE

EXAMPLE

NON-EXAMPLE

Definition

In a right triangle, the legs are the two sides that form the right angle (90 degrees). These are the two shorter sides of the triangle. The third side, which is opposite the right angle, is called the hypotenuse.


A right triangle. The base is labeled leg, the height side is labeled leg, and the longest side is labeled hypotenuse.

  • Legs: The two sides that are adjacent to the right angle.

  • Hypotenuse: The side opposite the right angle and the longest side of the triangle.

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