Angles: Complementary, Supplementary, and Vertical

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

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

If one angle is 30°, what is its complementary angle?

Back

60°.

Front

If one angle is 110°, what is its supplementary angle?

Back

70°.

Front

Find the missing angle if one angle is 40° in a pair of complementary angles.

Back

50°.

Front

Find the missing angle if one angle is 130° in a pair of supplementary angles.

Back

50°.

Front

If ∠1 and ∠2 are vertical angles and ∠1 = 75°, what is ∠2?

Back

75°.

Front

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

Back

90°.

Front

What is the sum of complementary angles?

Back

90°.