Protractor Practice

Front

What is a protractor used for?

Back

A protractor is used to measure angles.

Tags

CCSS.4.MD.C.6

Front

What is the measure of a right angle?

Back

90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

180 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is an acute angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a reflex angle?

Back

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

Tags

CCSS.4.G.A.1

Front

How do you read a protractor?

Back

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

Tags

CCSS.4.MD.C.6

Front

What is the first step to measure an angle with a protractor?

Back

Place the midpoint of the protractor at the vertex of the angle.

Tags

CCSS.4.MD.C.6

Front

TRUE OR FALSE: You need to know the type of angle before measuring it.

Back

True.

Tags

CCSS.4.MD.C.6

Front

What is the measure of the following angle: 175 degrees?

Back

The angle measures 175 degrees.

Tags

CCSS.4.G.A.1