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Sum of interior angles = 2880 = 180*(n - 2) , where n is the number of sides.

So (n - 2) = 16 that is, n = 18

Thus 18 equal angles sum to 2880 so each one is 2880/18 = 160 degrees.

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Q: How do you find the size of each interior angle of a regular polygon whose angle sum is 2880 degrees?
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