Answer:A supplementary angle is one of two angles whose measures add up to 180 degrees. For example, if one angle measures 120 degrees, the supplementary angle would measure 60 degrees because 120 + 60 = 180.
Answer:Supplementary angles are those angles that sum up to 180 degrees. For example, angle 130° and angle 50° are supplementary angles because sum of 130° and 50° is equal to 180°.