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Lesson Summary. Supplementary angles are any two angles whose measures sum to 180 degrees. Supplementary angle pairs will either be two right angles (both 90 degrees) or be one acute angle and one obtuse angle. If two angles are both supplementary to the same angle, then the two angles are of equal measure.
Best Answer: Supplementary angles are two angles that add up to 180 degrees exactly. To find the supplement of an angle, subtract the current angle from 180. The remaining number is the remaining degrees in the other angle. You will get 118 degrees, which is your supplement. In case you were wondering, a set of complementary angles are two that add up to 90 degrees.