Summary
Exterior Angles of a Polygon

Steel construction of a bridge uses many angles for support

Think of how your knowledge of exterior angles is helpful in the construction of bridges.

In this topic, you studied the exterior angles of a polygon. You learned that an exterior angle and its corresponding interior angle are supplementary and a type of linear pair. You also learned that the sum of all exterior angles in any polygon is 360°. You will need to apply your knowledge of exterior and interior angles of a polygon when you learn about tessellations.