Reading a Protractor

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Front

How do you read a protractor?

Back

To read a protractor, align the baseline of the angle with the 0-degree line and look at where the other ray intersects the numbered scale.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the measure of a straight angle?

Back

A straight angle measures 180 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a reflex angle?

Back

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

Front

How can you estimate an angle's measure?

Back

You can estimate an angle's measure by comparing it to known angles like 0, 90, and 180 degrees.

Front

What is the purpose of constructing angles?

Back

Constructing angles helps in creating precise geometric figures and understanding angle relationships.

Front

What is the nearest measure of an angle that looks like 75 degrees?

Back

The nearest measure of an angle that looks like 75 degrees is 75 degrees.