Complementary & 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

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

Back

Congruent angles.

Front

What do you call angles that are opposite of each other when lines intersect?

Back

Vertical angles.

Front

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

Back

150°.

Front

If one angle is 40°, what is its complementary angle?

Back

50°.

Front

Are 70° and 110° angles complementary, supplementary, or neither?

Back

Supplementary.

Front

Are 30° and 60° angles complementary, supplementary, or neither?

Back

Complementary.

Front

Find the missing angle if one angle is 47°.

Back

The missing angle is 133° (180° - 47°).

Front

Find the missing angle if one angle is 60°.

Back

The missing angle is 30° (90° - 60°).