Complementary and Supplementary angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

If angle A is 30°, what is the measure of its complementary angle?

Back

60° (90° - 30° = 60°).

Front

If angle B is 120°, what is the measure of its supplementary angle?

Back

60° (180° - 120° = 60°).

Front

What is the sum of complementary angles?

Back

90 degrees.

Front

What is the sum of supplementary angles?

Back

180 degrees.

Front

If two angles are complementary, and one angle measures 45°, what is the other angle?

Back

45° (90° - 45° = 45°).

Front

If two angles are supplementary, and one angle measures 90°, what is the other angle?

Back

90° (180° - 90° = 90°).

Front

What type of angles are formed when two lines intersect?

Back

Vertical angles.

Front

If angle C is 50°, what is the measure of angle D if they are complementary?

Back

40° (90° - 50° = 40°).