If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Measuring angles review

Review measuring angles with a protractor, then try some practice problems.

Measuring angles

Angles are measured in degrees. We can use a protractor to measure how many degrees an angle is.
Example:
Measure the following angle in degrees:
An angle is drawn that is smaller than a right angle.
First, we line up the dot on the center of the protractor with the vertex of the angle.
An angle is drawn that is smaller than a right angle. The angle is placed on top of a protractor. One ray points to 90 and the other points to 160 degrees, moving clockwise.
Next, we rotate the protractor so that the 0, degrees mark lines up with one side of the angle.
An angle is drawn that is smaller than a right angle. The angle is placed on top of a protractor. One ray points to 0 and the other points to 70 degrees, moving clockwise.
Finally, we read the protractor to see where the other side lines up.
The angle is 70, degrees.
Want to learn more about measuring angles? Check out this video.

Practice

Problem 1
Measure the angle in degrees.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
degrees

Want to try more problems like this? Check out this exercise.

Want to join the conversation?