1. More with interior and exterior angles of polygons
8-1 Day 3
More with interior and exterior angles of polygons

2. Let’s look at yesterday’s assignment

5. What is the measure of each exterior angle of a regular pentagon?

6. So… if the exterior angles always have a sum of 360 degrees try to answer these questions.
What is the measure of each exterior angle of a regular decagon?
What is the measure of each exterior angle of a regular octagon?
What is the measure of each exterior angle of a regular heptagon?
What is the measure of each exterior angle of a regular 18-gon?

7. If each exterior angle of a regular polygon has a measure of 45 degrees. How many sides does the polygon have?

8. If each exterior angle of a regular polygon has a measure of 15 degrees. How many sides does the polygon have?
If each exterior angle of a regular polygon has a measure of 20 degrees. How many sides does the polygon have?
If each exterior angle of a regular polygon has a measure of 36 degrees. How many sides does the polygon have?

9. If an interior angle of a regular polygon has a measure of 157
If an interior angle of a regular polygon has a measure of degrees, how many sides does the polygon have?

10. *** remember that one interior plus one exterior = 180
If an interior angle of a regular polygon has a measure of 135 degrees, how many sides does the polygon have?
If an interior angle of a regular polygon has a measure of 60 degrees, how many sides does the polygon have?
If an interior angle of a regular polygon has a measure of 144 degrees, how many sides does the polygon have?

11. Rally Robin

12. Check your Rally Robin

13. Assignment
Finish Worksheet page 91 and 92