View the protractor below. The practice angle is on the protractor Use the slider to adjust the size of the angle and practice reading the protractor. Once you are done with your practice, drag the practice angle by the side off of the protractor. Use the labeled sides to drag the other angles to the protractor one by one to measure them. You can drag the larger blue endpoint to rotate and lengthen the angles to make them easier to measure. Click the refresh icon on the corner to generate a new random (orange) angle to measure.
Check Your Work! angle 1 - 91 degrees angle 2 = 143 degrees angle 3 = 23 degrees