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Sergeeva-Olga [200]
3 years ago
9

Find the sum of the angle measures of a quadrilateralquadrilateral.

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
4 0
I take it you meant the "interior" angles, as opposed to the "exterior" ones.

the sum of the interior angles of a polygon is

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

a QUADrilateral has 4 sides, so the sum of the interior angles is 180( 4 - 2).
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