complementary angles
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Complementary angles
2 angles that equal more than 90 degrees when added
The angles that are equal to 180 are called supplementary angles. The angles that equal 90 degrees are called complimentary.
A rectangle has 4 equal interior angles of 90 degrees whereas a parallelogram has 2 equal acute angles and 2 equal obtuse angles.
Right triangle. Two angles are 45 degrees, and the third angle is 90 degrees. Two sides are equal.