Supplementary and Complementary Angles FLASHCARD

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the supplement of a 160° angle?

Back

20°

Front

What is the complement of a 50° angle?

Back

40°

Front

If two angles are supplementary, what is their sum?

Back

180 degrees.

Front

If two angles are complementary, what is their sum?

Back

90 degrees.

Front

Are 70° and 20° angles complementary, supplementary, or neither?

Back

Complementary.

Front

Are 140° and 50° angles complementary, supplementary, or neither?

Back

Supplementary.

Front

What is the value of x if x + 19 = 90?

Back

71.

Front

What is the value of x if x + 15 = 180?

Back

165.