The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.
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Because the 3 angles within a triangle add must up to 180 degrees and 2 right angles add up to 180 degrees
180 degrees
The sum of the interior angles is found by: (number of sides-2)*180 degrees Exterior angles add up to 360 degrees Angles on a straight line add up to 180 degrees
The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.The interior angles add up to (20-2)*180 = 18*180 = 3240 degrees.
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Supplementary angles are 2 angles that add up to 180°. Complementary angles are 2 angles that add up to 90°.
They are supplementary angles that add up to 180 degrees
Because the 3 angles within a triangle add must up to 180 degrees and 2 right angles add up to 180 degrees
180 degrees
The sum of the interior angles is found by: (number of sides-2)*180 degrees Exterior angles add up to 360 degrees Angles on a straight line add up to 180 degrees
The interior angles of a polygon with n sides add up to (n-2)*180 degrees.Here, n = 7 so the answer is (7-2)*180 = 900 degrees.The interior angles of a polygon with n sides add up to (n-2)*180 degrees.Here, n = 7 so the answer is (7-2)*180 = 900 degrees.The interior angles of a polygon with n sides add up to (n-2)*180 degrees.Here, n = 7 so the answer is (7-2)*180 = 900 degrees.The interior angles of a polygon with n sides add up to (n-2)*180 degrees.Here, n = 7 so the answer is (7-2)*180 = 900 degrees.
2 angles that add up to 180 degrees are supplementary
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