measuring angles with a protractor

Front

What is a protractor?

Back

A tool used to measure angles.

Tags

CCSS.4.MD.C.6

Front

What is the measure of an angle that is 20°?

Back

20°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is an obtuse angle?

Back

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 an angle that is 115°?

Back

115°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

What is the measure of an angle that is 110°?

Back

110°

Tags

CCSS.4.MD.C.6

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

How do you measure an angle using a protractor?

Back

Align the protractor's baseline 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 range of a reflex angle?

Back

An angle that measures more than 180 degrees but less than 360 degrees.

Tags

CCSS.4.G.A.1