Answer:
1.three sides polygon have
2. i think 11- gons has regular properties so the equation for this would be 1620 divided by 11 and it equals 147.27 so the meauser of the interirinangle of a 11-gon is about 147.27 degrees.
3.8 sides
Step-by-step explanation: if the sum of the angles is 10,800 degrees and each angle is 1,350 degrees, the deck will have the number of sides of the sum of the angle measurements divided by each angls measurmeasur.ments
10,800/1,350=1,080/135= 8 sides
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