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  • 10-05-2017
  • Mathematics
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If the sum of the interior angles is 1980 what is the name of the polygon

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EEPJR
EEPJR EEPJR
  • 10-05-2017
Sum of Interior Angle = 1980
S.I.A. = 180(n-2)
1980/180 = n-2
11 = n - 2
n = 13

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