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complementary angles are 2 angles that add to 90 supplementary are 2 angles that add to 180
OK, from what I learned is Complementary angles have 2 angles and have a 90° angle. And 0 and 90° are complementary angles. Um, that's all I know.
complementary angles
If 2 angles are congruent and complementary, they must each be 45 degrees.
Complementary angles