Protractor Practice

Front

What is a protractor used for?

Back

A protractor is used to measure angles in degrees.

Front

What is the measure of a right angle?

Back

90 degrees.

Front

What type of angle measures less than 90 degrees?

Back

Acute angle.

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle.

Front

What is the measure of a straight angle?

Back

180 degrees.

Front

What do you call the point where two lines meet?

Back

A vertex.

Front

When measuring an angle, where should the center of the protractor be placed?

Back

On the vertex of the angle.

Front

What is the term for angles that are exactly 180 degrees apart?

Back

Linear pair.

Front

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

Back

Obtuse angle.

Front

What is the measure of an angle that is complementary to a 30-degree angle?

Back

60 degrees.