the sum of the interior angles of a convex 45-gon is 7740.
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a convex polygon has 6 sides . What is the sum of the measure of its interior angles?
360
The sum of the exterior angles of any convex polygon is always 360 degrees. The sum of the interior angles of any convex n-gon is (n-2) * 180 degrees, because any convex n-gon can be represented as n-2 triangles, and the sum of the interior angles of a triangle is 180 degrees.
Yes
The sum of the interior angles of an n-gon is (n-2)*180 degrees. Whether the polygon is convex or regular are irrelevant. So for a pentagon, n = 5 and the sum of the interior angles is (5-2)*180 = 3*180 = 540 degrees.