360.
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No because the sum of the interior angles of all quadrilaterals total 360 degrees.
It can be proven that the sum of the interior angles of a polygon with n sides (or angles) is 180*(n-2) degrees. Since a quadrilateral is a 4-sided polygon, n = 4, and so the sum of the angles is (4-2)*180 = 2*180 = 360 degrees.
a quadrilateral equal then the answer is 360 degrees .
The sum of the interior angles of a quadrilateral is 360 degrees (not 180). The sum of the exterior angles is also 360 degrees. Whether the quadrilateral is convex or concave is not relevant.
360 degrees is either a square or a quadrilateral.