Measuring Using a Protractor

Is this the correct way of using a protractor to measure an angle

• Yes, because the vertex of the angle is aligned with the center point of the protractor.

• No, because the baseline of the protractor is not aligned properly with the bottom ray of the angle.

This is the wrong way of using a protractor because __________.

• the bottom line of the angle is not aligned to the baseline of the protractor.

• the vertex of the angle is not aligned to the center point of the protractor.

This is what kind of angle?

• obtuse

• right

• straight

• acute

_{What is the measure of the following angle?}  

• 21 degrees.

• 34 degrees.

• 70 degrees.

• 172 degrees. 

What is the measurement of the angle?

• 0˚

• 90º

• 180º

What is the measurement of the angle?

• 24˚

• 36˚

• 156˚

• 150˚

• 120 degrees

• 80 degrees

• 100 degrees

• 0 degrees

What is the measurement of the angle?

• 50˚

• 180˚

• 130˚

• 0˚

• 145 degrees

• 155 degrees

• 35 degrees

• 0 degrees

Measure to the nearest 10 degrees.

• 10^°

• 20°

• 170°

• 160°