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15-03-2018
Mathematics

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find the sum of the measures of the interior angles of the indicated convex polygon 21-gon

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jdoe0001 jdoe0001

15-03-2018

sum of all interior angles on a polygon is

180( n - 2) n = number of sides in the polygon.

now, this one is is a 21-gon, thus the sum is 180( 21 - 2).

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