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OpenStudy (anonymous):
What is the sum of the interior angle measures of a 20-gon?
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OpenStudy (midhun.madhu1987):
Use the formula : (n-2) x 180 where n is the number of sides of Polygon...
OpenStudy (anonymous):
thanks you
OpenStudy (midhun.madhu1987):
yeah... my pleasure... :)
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