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

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 the measure of a right angle?

Back

A right angle measures 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

A straight angle measures 180 degrees.

Tags

CCSS.4.G.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 use a protractor to measure an angle?

Back

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

Tags

CCSS.4.MD.C.6

Front

What is the measure of angle A if it is a right angle?

Back

Angle A measures 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of angle B if it is obtuse?

Back

Angle B measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of angle C if it is acute?

Back

Angle C measures less than 90 degrees.

Tags

CCSS.4.G.A.1