SOLUTION: hi can you explain to me how to find the size of one interior angle in a regular polygon with 9 sides . thank you

Question 457169: hi can you explain to me how to find the size of one interior angle in a regular polygon with 9 sides . thank you
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The sum of interior angles = 180*(n-2) degrees, where n = # of sides
180(9-2) = 1260 total
1260/9 = 140 degrees
----------------------
A better way:
The sum of exterior angles for all polygons = 360 degs (even a circle)
360/9 = 40 degs exterior
180 - 40 = 140 degs internal

RELATED QUESTIONS
hi can you explain to me how to find the number of sides in a regular polygon that has... (answered by Alan3354)

Hi can you explain to me How you find the number of sides in a regular polygon that has... (answered by Alan3354)

Can you please help me with this question. The measure of each interior angle of a... (answered by stanbon)

Explain how you would find the number of sides a regular polygon has if it's interior... (answered by Alan3354,reviewermath)

Can you find how many sides a regular polygon has if the interior angle is... (answered by Alan3354)

can you please help me solve: (((A regular polygon has 12 sides. Find the measure of each (answered by J2R2R)

A regular polygon has 39 sides. find the size of each interior angle. (could you explain... (answered by solver91311,MathLover1)

Can you please help me with this question. Find the number of sides of a regular polygon... (answered by stanbon)

how to find the measure of an interior angle and an exterior angle of a regular polygon... (answered by KMST)