Outer Angles of a Polygon

Learning Outcomes:

• Understanding about the concept of Outer Angles of Polygons
• Establishing the relationship between interior angles and exterior angles of Polygons 
• Visualize the Outer Angle Sum of Polygons 
• Applying the concept of outer angle sum in problem solving 

Class Notes

Definition and meaning

The Angles formed outside a Polygon by extending one side of the Polygon is called Outer Angles.

Inner Angle + Outer Angle = 180°

Sum of Outer Angles of a Polygon= Angle around a point =360°

Video

https://youtu.be/h_9vTeDLlqw?si=xaqPNFsvqMh8Ns8h

Quick Check

1.What is the outer angle sum of the following Polygons?

2.If the one of the outer angle of a regular polygon is 30 °,then how many sides does it have?

(a)12

(b) 24

(c) 10

(d) 30

3. What is the inner angle of a Polygon, whose outer angle is 60°?