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 align a protractor to measure an angle?

Back

Align the baseline of the protractor with one side of the angle and the center point with the vertex of the angle.

Tags

CCSS.4.MD.C.6

Front

What is the vertex of an angle?

Back

The vertex of an angle is the point where the two sides of the angle meet.

Front

What is the difference between a full angle and a reflex angle?

Back

A full angle measures 360 degrees, while a reflex angle measures more than 180 degrees but less than 360 degrees.

Tags

CCSS.4.G.A.1