Identifying the Different Angles Right, Acute and Obtuse

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

What is an obtuse angle?

Back

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

Front

What is a reflex angle?

Back

A reflex angle is an angle that measures greater than 180 degrees but less than 360 degrees.

Front

How many degrees are in a straight angle?

Back

A straight angle measures exactly 180 degrees.

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

If an angle measures 90 degrees, what type of angle is it?

Back

It is a right angle.

Front

What type of angle is formed by the hands of a clock at 3:00?

Back

It is a right angle.

Front

What type of angle is formed by the hands of a clock at 10:10?

Back

It is an obtuse angle.