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 do you measure an angle with a protractor?

Back

Place the center of the protractor on the vertex of the angle and align one side of the angle with the zero line of the protractor.

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 the measure of a full rotation?

Back

360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

If an angle measures 54 degrees, is it acute, obtuse, or right?

Back

It is an acute angle.

Tags

CCSS.4.G.A.1

Front

If an angle measures 175 degrees, is it acute, obtuse, or right?

Back

It is an obtuse angle.

Tags

CCSS.4.G.A.1

Front

What do you call an angle that measures exactly 90 degrees?

Back

A right angle.

Tags

CCSS.4.G.A.1