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babunello [35]
3 years ago
9

Measurement of a 18 gon of its interior and exterior

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
4 0

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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