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Parts of a Right Triangle

In a previous activity, a RIGHT TRIANGLE was defined as a triangle with ONE RIGHT angle. By moving the 3 vertices of RIGHT Triangle ABC below, pay attention to the following: 1. The lengths of the the three sides of the right triangle. 2. The location of the right angle with respect to the location of the three sides. 3. The relationship of the two acute angles of the right triangle.

Legs of a Right Triangle

The two legs of a right triangle intersect to form a right angle. The legs of a right triangle are ____________ to each other.

Hypotenuse

The hypotenuse is the ______________ side of a right triangle and is _____________ the right angle.

Acute Angles of a Right Triangle

The two acute angles of a right triangle are ______________ angles.