Day 122 Complementary and Supplementary Angles

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

If ∠A and ∠B are complementary and ∠A measures 30°, what is the measure of ∠B?

Back

60°.

Front

If ∠C and ∠D are supplementary and ∠C measures 110°, what is the measure of ∠D?

Back

70°.

Front

What is an example of a pair of complementary angles?

Back

81° and 9°.

Front

What is an example of a pair of supplementary angles?

Back

120° and 60°.

Front

If two angles are complementary, what is the sum of their measures?

Back

90°.

Front

If two angles are supplementary, what is the sum of their measures?

Back

180°.

Front

Tell whether the angles are complementary or supplementary: ∠E = 45° and ∠F = 45°.

Back

Supplementary; they add up to 90°.

Front

If ∠G and ∠H are complementary, and the measure of ∠G is 35°, what is the measure of ∠H?

Back

55°.