**Definition of Right Angle**

- Right angle is an angle that has a measure of 90°.

**Examples of Right Angle**

- The figure below shows a right angle.

**Solved Example on Right Angle**

One of the angles in a triangle is 90°. What type of a triangle is it?

Choices:

A. equilateral triangle

B. obtuse triangle

C. right triangle

D. acute triangle

Correct Answer: C

Solution:

Step 1:A triangle in which one of the angles is 90° is called a right triangle.

**Related Terms for Right Angle**

- Angle
- Right Triangle