dantheman5055 dantheman5055
  • 16-10-2018
  • Mathematics
contestada

measurement of a 18 gon of its interior and exterior

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baileyboy
baileyboy baileyboy
  • 16-10-2018

There will be 18 exterior angles, each of 360/18 = 20 deg. So each interior angle, which is supplementary to the exterior angle will be 180–20 - 160 deg. The sum of the 18 interior angles = 18*160 = 2880 deg.

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