Protractors with Misaligned Angles

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 read a protractor?

Back

To read a protractor, align the baseline of the angle with the 0° line of the protractor and read the measurement where the other line intersects the numbered scale.

Tags

CCSS.4.MD.C.6

Front

What is the angle measurement of a right angle?

Back

A right angle measures 90°.

Tags

CCSS.4.G.A.1

Front

What is the angle measurement of a straight angle?

Back

A straight angle measures 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°.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90° but less than 180°.

Tags

CCSS.4.G.A.1

Front

What is a full rotation in degrees?

Back

A full rotation is 360°.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

If an angle measures 100°, what type of angle is it?

Back

An angle that measures 100° is an obtuse angle.

Tags

CCSS.4.G.A.1

Front

What is the measurement of a 45° angle?

Back

A 45° angle is an acute angle.

Tags

CCSS.4.G.A.1

Front

How do you find the measurement of an angle using a protractor?

Back

Place the protractor's center point on the vertex of the angle, align one side with the baseline, and read the measurement on the other side.

Tags

CCSS.4.MD.C.6