SOLUTION: The measure of each interior angle of a regular quadrilateral is? The measure of the supplementary angle of an interior angle is?

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Question 747720: The measure of each interior angle of a regular quadrilateral is?
The measure of the supplementary angle of an interior angle is?
Answer by fcabanski(1391) About Me  (Show Source):
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The sum of interior angles in a quadrilateral is (n-2)*180 where n is the number of sides. (4-2)*180 = 360.


In a regular quadrilateral all four interior angles are equal. 360/4 = 90.


Supplementary angles have a sum of 180. So the angles supplementary to each of these interior angles are 90 degrees.