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How many sides would there be in a convex polygon if the sum of all but one of its interior angles is 1970 degrees?

 Aug 1, 2021
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Formula for a  n-gon sum of interior angles   (n-2)(180)

   (n-2)(180) > 1970

n > 12.94

n =13    as a convex polygon has angles < 180 degrees      example: n= 14 would = 2160     which is 190 more than 1970 

 Aug 1, 2021

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