Understanding complementary and supplementary angles will help you solve for an unknown angle measurement. If the measure of two angles added together equals 90o, the angles are complementary. A supplementary angle is formed when the sum of the measures of two angles equals 180o.
These resources are part of KET's Measurement and Geometry collection.
This video segment originally appeared in KET’s GED Connection series.
This video is available in both English and Spanish audio, along with corresponding closed captions.