
Two angles are said to be supplementary if the sum of their measures is 180°. Adjacent and nonadjacent supplementary angles are shown below: mÐa + mÐb = 180^{0} mÐc + mÐd = 180^{0} Example: If the measure of an angle is 20°, what is the measure of its supplement? Solution: The measure of the supplement = 180°  20° = 160° Directions: For the following questions, find the measure of the supplement of the angle given, draw the figure and enter only the number in the boxes. For example, the supplement of the angle 70 degrees is 110. 