resedresed8856 resedresed8856
  • 22-10-2017
  • Mathematics
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The sum of the angle measures of a polygon with n sides is 1260. find n.

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kritter1
kritter1 kritter1
  • 22-10-2017
Knowing the interior angle sum formula is; 

180x(n-2)

180x(n-2)=1260 (solve for n here) 
180n-360=1260 
180n=1260+360
180n=1620 
n=1620/180 
n=9

Therefore, this polygon has 9 sides.

Hope I helped :) 
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