Protractor Practice

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 use a protractor to measure an angle?

Back

Align the baseline of the protractor with one side of the angle, then read the degree measurement where the other side intersects the protractor.

Tags

CCSS.4.MD.C.6

Front

What is the measure of a right angle?

Back

A right angle measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

A straight angle measures exactly 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

What is a reflex angle?

Back

A reflex angle is an angle that measures more than 180 degrees but less than 360 degrees.

Tags

CCSS.4.G.A.1

Front

How can you estimate if an angle is close to 30 degrees?

Back

Look for an angle that is smaller than a right angle but larger than 0 degrees.

Tags

CCSS.4.G.A.1

Front

How can you estimate if an angle is close to 45 degrees?

Back

Look for an angle that is halfway between a right angle (90 degrees) and 0 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of angle TUV if it is closest to 60 degrees?

Back

Angle TUV measures approximately 60 degrees.

Tags

CCSS.4.MD.C.6