protractor practice

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Front

What is the measurement of a right angle?

Back

90º

Front

What is an acute angle?

Back

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

Front

What is an obtuse angle?

Back

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

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180º.

Front

How do you use a protractor to measure an angle?

Back

Align the baseline of the protractor with one side of the angle and read the measurement where the other side crosses the scale.

Front

What is the measurement of a full rotation?

Back

A full rotation measures 360º.

Front

If an angle measures 0º, what type of angle is it?

Back

It is called a zero angle.

Front

What is the measurement of a reflex angle?

Back

A reflex angle is an angle that measures more than 180º but less than 360º.

Front

What is the difference between acute and obtuse angles?

Back

Acute angles are less than 90º, while obtuse angles are more than 90º but less than 180º.