SOLUTION: If you have the measure of a vertex angle like 140 degrees how do you determine how many sides a regular polygon has?
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Question 278950: If you have the measure of a vertex angle like 140 degrees how do you determine how many sides a regular polygon has?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The measure of an interior angle of a regular 
-gon is given by:
180}{n})
So, set this expression equal to your given interior angle measure and then solve for
180}{n}\ =\ 140)
180\ =\ 140n)
John
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