Complementary & Supplementary Angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

Example of complementary angles:

Back

30 degrees and 60 degrees are complementary angles because 30 + 60 = 90.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

Example of supplementary angles:

Back

110 degrees and 70 degrees are supplementary angles because 110 + 70 = 180.

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of their measures is 90 degrees.

Front

If two angles are supplementary, what is the sum of their measures?

Back

The sum of their measures is 180 degrees.

Front

Can two angles be both complementary and supplementary?

Back

No, two angles cannot be both complementary and supplementary at the same time.

Front

What is the relationship between complementary angles and right angles?

Back

Complementary angles together form a right angle.

Front

What is the relationship between supplementary angles and straight angles?

Back

Supplementary angles together form a straight angle.

Front

If one angle measures 45 degrees, what is the measure of its complementary angle?

Back

The complementary angle measures 45 degrees (90 - 45 = 45).