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 two angles are complementary, what is their sum?

Back

90°.

Front

If two angles are supplementary, what is their sum?

Back

180°.

Front

Are two angles that measure 30° and 60° complementary or supplementary?

Back

Complementary.

Front

Are two angles that measure 110° and 70° complementary or supplementary?

Back

Supplementary.

Front

What is an example of complementary angles?

Back

45° and 45°.

Front

What is an example of supplementary angles?

Back

120° and 60°.

Front

If two angles are neither complementary nor supplementary, what can we say about their sum?

Back

Their sum is not 90° or 180°.

Front

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

Back

Vertical angles.