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What are 2 adjacent angles with the sum of 90 degrees?
Such angles are called complementary angles.
2 angles whose sum is 90 degrees?
complementary
What is the sum of the interior angles of a quadrilateral?
The interior angles of a quadrilateral (polygon with 4 sides and angles) sum to 360 degrees. We can find this in a couple of ways. First, noting the general formula for an n-gon: S = (n - 2)(180) where S is the sum of the interior angles in degrees and n is the number of sides of the n-gon. We find S = (4 - 2)(180) = 360 degrees. Second, the exterior angles must average 360/n degrees. In this case, 360/4 = 90 degrees. Interior angles are supplementary to exterior angles, so the average interior angle must equal 90 degrees. Finally, 4 interior angles with an average of 90 degrees means a sum of 360 degrees. Finally, consider some quadrilaterals (e.g. squares, rectangles, parallelograms, etc.). They each contain 360 degrees (e.g. four 90 degree angles).
What is the sum of interior angles of a regular dodecagon?
The sum of interior angles of an n-sided polygon, regular or otherwise, is 2n - 4 right angles. Where n = 12 sum is ((2 x 12) - 4) x 90 = 1800 degrees.
What is the sum of the angles of a polygon with 102 sides?
The sum of the interior angles is (102-2)*180 = 18,000 degrees.The sum of the interior angles is (102-2)*180 = 18,000 degrees.The sum of the interior angles is (102-2)*180 = 18,000 degrees.The sum of the interior angles is (102-2)*180 = 18,000 degrees.
