Angles-Complementary and supplementary

Front

What is a right angle?

Back

An angle that measures exactly 90°.

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

What is an acute angle?

Back

An angle that measures less than 90°.

Front

What is an obtuse angle?

Back

An angle that measures more than 90° but less than 180°.

Front

What is a straight angle?

Back

An angle that measures exactly 180°.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

Find the missing angle if one angle is 28°.

Back

The missing angle is 62° (since 90° - 28° = 62° for complementary angles).

Front

Find the missing angle if one angle is 150°.

Back

The missing angle is 30° (since 180° - 150° = 30° for supplementary angles).

Front

What is an example of a pair of complementary angles?

Back

81° and 9°.