Homework Help: geometry

Posted by josh on Monday, December 31, 2012 at 6:28pm.

The Polygon Angle-Sum Theorem states the following: The sum of the measures of the angles of an n-gon is ____. (1 point)

(n – 1)180o

(n – 2)180o

9. What is the measure of one angle in a regular 16-gon? (1 point)
2,520o
202.5o
157.5o
78.75o

10. The measure of each exterior angle of a regular 5-gon is ____ the measure of each exterior angle of a regular 9-gon. (1 point)
greater than
less than

geometry - Reiny, Monday, December 31, 2012 at 7:46pm
The sum of the measures of the angles of an n-gon is 180(n-2)

9. Use the above formula to get 2520°

10.
The measure of each exterior angle of a regular 5-gon is 360/5 = 72°
The measure of each exterior angle of a regular 9-gon is 360/9 = 40°

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