These are a pair of angles, adjacent or nonadjacent, whose sum is 90°.

A pair of angles, which are either adjacent or non-adjacent, whose sum is 90 degrees, is classified and known as Complementary Angles. Complementary Angles are made from adjacent or non-adjacent angles, when added to together, their sum is equal to 90 degrees.

Just look outside and then you’ll see where the awnser is

Answer is a not really sure tho