Complementary and Supplementary Angles

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

If one angle is 70°, what is the measure of its supplementary angle?

Back

110° (180° - 70° = 110°).

Front

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

Back

60° (90° - 30° = 60°).

Front

What is the sum of two supplementary angles?

Back

180°.

Front

What is the sum of two complementary angles?

Back

90°.

Front

If two angles are supplementary and one angle measures 65°, what is the measure of the other angle?

Back

115° (180° - 65° = 115°).

Front

If two angles are complementary and one angle measures 25°, what is the measure of the other angle?

Back

65° (90° - 25° = 65°).

Front

What do you call angles that are equal to each other?

Back

Congruent angles.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.