Two angles are complementary if the sum of their measures is 90 degrees.
Two angles are supplementary if the sum of their measures is 180 degrees.
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It is when two angles add up to a sum of 180 degrees
complementary angles are two angles that have a sum of 90*. example. 30* + 60* = 90* that would be a complementary.
Complementary angles are two angles that add up to exactly 90 degrees.
no
two angles whose sum is 90 degrees is a complementary angle.