Measuring angles with a protractor

Front

What is a protractor?

Back

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

Front

What is the range of measurement for a protractor?

Back

A protractor typically measures angles from 0° to 180°.

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 right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

How do you measure an angle using a protractor?

Back

Align the baseline of the protractor with one side of the angle, then read the measurement where the other side intersects the protractor.

Front

What is the measurement of a full rotation?

Back

A full rotation measures 360 degrees.

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.

Front

If one angle measures 30 degrees, what is its complementary angle?

Back

The complementary angle is 60 degrees.