Acute and obtuse angles :

Angles that measure between and are called acute angles, while angles that measure between and are called obtuse angles.

Complement and supplement of angle :

If two angles have a sum of , then they are called complementary angles, and said each is the complement of the other. Two angles with a sum of are called supplementary angles.

The angle is .

Since the angle is between and , the angle is an acute angle.

The complement of is since .

The supplement of is since .

Acute, complement is , supplement is .