Protractors & 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

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

A straight angle measures 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

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 measurement where the other side intersects the protractor.

Tags

CCSS.4.MD.C.6

Front

What is the total measure of angles in a triangle?

Back

The total measure of angles in a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

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

What is the difference between complementary and supplementary angles?

Back

Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees.

Tags

CCSS.7.G.B.5

Front

If one angle measures 30 degrees, what is the measure of its complement?

Back

The complement of a 30-degree angle is 60 degrees.

Tags

CCSS.7.G.B.5