Measuring Angles Using a 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 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 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 a right angle?

Back

A right angle is an angle that measures exactly 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 the measure of a straight angle?

Back

A straight angle measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

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 one angle in a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What is the measure of a full rotation?

Back

A full rotation measures 360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

How can you identify an acute angle using a protractor?

Back

If the angle measures less than 90 degrees when measured with a protractor, it is acute.

Tags

CCSS.4.MD.C.6