Question 386719
if one interior angle of an equiangular n-gon is 156, 
how many sides does the n-gon have?
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Each corresponding angle is 180-156 = 24 degrees.
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Fact: sum of the exterior angles is 360 degrees.
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# of exterior angles = 360/24 = 15
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Therefore # of sides is 15.
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Cheers,
Stan H.