measuring angles with a protractor

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 a protractor?

Back

A tool used to measure angles.

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

Front

If an angle measures 110°, what type of angle is it?

Back

It is an obtuse angle.

Tags

CCSS.4.G.A.1

Front

If an angle measures 70°, what type of angle is it?

Back

It is an acute angle.

Tags

CCSS.4.G.A.1

Front

What is the sum of angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5