Question 416509: How do you find the measures of interior angles on a pentagon?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! How do you find the measures of interior angles on a pentagon?
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If it's a regular pentagon,
there are 5 exterior angles.
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Sum of those angles is 360
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Each ext. angle is 360/5 = 72 degrees.
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So, each interior angle is 180-72 = 108 degrees.
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Another way to do it.
Sum of the interior angles is (n-2)180 = 3*180 = 540
Then 540/5 = 108 degrees.
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Cheers,
Stan H.
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