Protractor

Front

What is a protractor?

Back

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

Tags

CCSS.4.MD.C.6

Front

What is the purpose of a protractor?

Back

The purpose of a protractor is to help in measuring and drawing angles accurately.

Tags

CCSS.4.MD.C.6

Front

How many degrees are in a right angle?

Back

A right angle measures 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the angle measurement of a straight line?

Back

A straight line measures 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 full rotation in degrees?

Back

A full rotation is 360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

How do you use a protractor to measure an angle?

Back

To measure an angle, align the baseline of the protractor with one side of the angle and read the measurement where the other side crosses the protractor.

Tags

CCSS.4.MD.C.6

Front

What is the difference between a reflex angle and an acute angle?

Back

A reflex angle is greater than 180 degrees, while an acute angle is less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

If an angle measures 85 degrees, is it acute, obtuse, or right?

Back

An angle measuring 85 degrees is an acute angle.

Tags

CCSS.4.G.A.1