Question

Match the following.

• A. 80°, 10°
• B. 90°
• C. Angles$<$ 90°
• D. 120°, 60°

Answer 1

• If sum of two angles is 90°, then they are called complementary angles. Hence, 80 and 10° are complementary angles.
• If sum of two angles is 180°, then they are called supplementary angles. Hence, 120° and 60° are Supplementary angles.
• If the measure of an angle is less than 90°, then it is called an acute angle.
• If the measure of an angle is equal to 90°, then it is called a right angle.