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Complementary angles are two angles with a sum of 90Âº. Supplementary angles are two angles with a sum of 180Âº. Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X. The Lesson:
Nov 14, 2015. Angles with a sum of 180 degrees. Supplementary angles are angles whose sum is 180 degrees. An example would be two angles that are 50 and 130. Their sum is 180 degrees, and they form a straight like when put together.