Question

Define complementary angles.

Answer 1

Complementary Angles: Two angles, the sum of whose measures is 90°, are called complementary angles.

Thus, angles ∠BAX and ∠XACare complementary angles, if

 x +y = 90°

Example 1:

Angles of measure 50°and 40°are complementary angles, because

50°+40° =90°

Example 2:

Angles of measure 60°and 30°are complementary angles, because

60°+30° =90°