Acute, Obtuse, and Right Angles

Front

What is an acute angle?

Back

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

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 is a right angle?

Back

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

Front

What is the measure of a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What do you call two angles that add up to 90 degrees?

Back

Complementary angles.

Front

What do you call two angles that add up to 180 degrees?

Back

Supplementary angles.

Front

If an angle measures 45 degrees, what type of angle is it?

Back

It is an acute angle.

Front

If an angle measures 120 degrees, what type of angle is it?

Back

It is an obtuse angle.

Front

What is the measure of a right angle in degrees?

Back

90 degrees.

Front

Can an angle be both acute and obtuse?

Back

No, an angle cannot be both acute and obtuse.