90 degrees
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Angles can be complementary. A 100 degree angle is a complementary angle to an 80 degree angle in geometry studies.
Complementary angles consist of 2 angles that add up to 90 degrees; so the complimentary angle to a 31 degree angle is a 59 degree angle.
It's a 50 degree angle. It's an angle that measures 50 degrees. It's the complementary angle of a 40 degree angle.
A pair of angles are complementary if their sum adds up to 90 degrees. Therefore, in this case, the angle complementary to 23.5 degrees is 90 - 23.5 = 66.5 degrees.
The complement of 89 degrees is: 89+1 = 90 degrees which is a complementary angle