Complementary and Supplementary Angles

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

If one angle is 45 degrees, what is its complementary angle?

Back

The complementary angle is 45 degrees.

Front

If one angle is 135 degrees, what is its supplementary angle?

Back

The supplementary angle is 45 degrees.

Front

What is an example of a pair of complementary angles?

Back

81° and 9° are complementary angles.

Front

What is an example of a pair of supplementary angles?

Back

45° and 135° are supplementary angles.

Front

If two angles are adjacent, what does that mean?

Back

Adjacent angles are two angles that share a common side and a common vertex.