Geometry - Protractors - 4th grade

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 measure of a right angle?

Back

A right angle measures 90 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 straight angle?

Back

A straight angle measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

How do you read a protractor?

Back

To read a protractor, align the baseline of the protractor with one side of the angle and read the measurement where the other side intersects the curved edge.

Tags

CCSS.4.MD.C.6

Front

What is the sum of angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

If an angle measures 132 degrees, is it acute, obtuse, or straight?

Back

It is an obtuse angle.

Tags

CCSS.4.G.A.1

Front

What angle measures 30 degrees?

Back

An angle that opens slightly more than a right angle but less than 45 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of angle L DCB if it is given as 100 degrees?

Back

Angle L DCB measures 100 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1