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nalin [4]
3 years ago
12

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

Mathematics
1 answer:
Anna35 [415]3 years ago
3 0
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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