Interior & Exterior Angles of Polygons

Polygons

Interior and Exterior Angles

Dr. Tom Giles

Interior and Exterior Angles

Sum of Interior Angles for Regular Polygon = (n-2) 180

Sum of Exterior Angles for Any Polygon = 360

Interior Angle Sum

Answer: 7 sides

Exterior Angles

Multiple Choice

Select the correct values for a and m.

• a=50, m=89

• a=50, m=116

• a=105, m=89

• a=105, m=116

Measure of Each Exterior Angle (for regular polygons)

Answer: 8 sides

Interior and Exterior Angles

Answer: 10 sides

Open Ended

Is it possible for a regular polygon to have an interior angle measure of

$$158\degree$$  ? Explain why or why not. 

You're Done! But...

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