**Two Angles Whose Measures Have A Sum Of 90 Degrees**. Two angles whose measures have the sum of 90 degrees if two angles have a sum of 90 degrees, then they are complementary. If two angles are complementary, then they add up to 90.

A ray that is part of an angle. A parallelogram with all sides congruent, all angles are right angles,, and opposite. Two angles whose measure have a sum of 90 degrees get the answers you need, now!