Angle Relationships

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

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

Back

60°

Front

If ∠B = 110°, what is the measure of its supplementary angle?

Back

70°

Front

What is the sum of the measures of complementary angles?

Back

90 degrees.

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees.

Front

If two angles are complementary, and one angle measures 40°, what is the other angle?

Back

50°

Front

If two angles are supplementary, and one angle measures 120°, what is the other angle?

Back

60°

Front

Find the missing angle if ∠C = 47° and ∠D is complementary to ∠C.

Back

43°

Front

Find the missing angle if ∠E = 137° and ∠F is supplementary to ∠E.

Back

43°