Using a Protractor

Front

What tool do we use to measure angles?

Back

Protractor

Tags

CCSS.4.MD.C.6

Front

Fill in the blank. This angle measures ___ degrees.

Back

120

Tags

CCSS.4.MD.C.6

Front

What is a protractor used for?

Back

A protractor is used to measure angles in degrees.

Tags

CCSS.4.MD.C.6

Front

What is the degree measure of a right angle?

Back

90

Tags

CCSS.4.G.A.1

Front

What is the degree measure of a straight angle?

Back

180

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

How do you read a protractor?

Back

Align the baseline of the protractor with one side of the angle and read the degree measurement where the other side intersects the protractor.

Tags

CCSS.4.MD.C.6

Front

What is the angle measure of a full rotation?

Back

360

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the purpose of the center hole in a protractor?

Back

The center hole is used to place the protractor's pivot point at the vertex of the angle being measured.

Tags

CCSS.4.MD.C.6