# Exterior Angle

### The Exterior Angle is the angle between any side of a shape, and a line extended from the next side.

Note: When you add up the Interior Angle and Exterior Angle you get a straight line, 180°. (See Supplementary Angles)

Note: When you add up the Interior Angle and Exterior Angle you get a straight line, 180°. (See Supplementary Angles)