Reading Protractors

Front

What is a protractor?

Back

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

Tags

CCSS.4.MD.C.6

Front

How many degrees are in a full circle?

Back

There are 360 degrees in a full circle.

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 a right angle?

Back

A right angle is an angle that measures exactly 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 straight angle?

Back

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

Tags

CCSS.4.G.A.1

Front

How do you read a protractor?

Back

To read a protractor, align the baseline of the protractor with one side of the angle and read the measurement where the other side intersects the curved edge.

Tags

CCSS.4.MD.C.6

Front

What is the measurement of a 15-degree angle?

Back

A 15-degree angle is a small angle that is less than a right angle.

Tags

CCSS.4.G.A.1

Front

What is the measurement of a 50-degree angle?

Back

A 50-degree angle is an acute angle.

Tags

CCSS.4.G.A.1

Front

What is the measurement of a 75-degree angle?

Back

A 75-degree angle is an acute angle.

Tags

CCSS.4.G.A.1