Right Angle

Right Angle

An angle in a plane formed by the intersection of two perpendicular lines.

The measure of a right angle is equal to half the measure of a straight angle.

The measure of a right angle is 90°.

Notation

In a geometric figure, a right angle is represented by a small square instead of an arc at the vertex of the angle.

Example

In the figure below, angle AOB is a right angle.