Decide on the range of the protractor worksheet. Most worksheets use the range from 0 degrees to 180 degrees. It is ambiguous to go above 180 degrees, as students may measure the wrong side of the angle.
Make a grid on the sheet to allow for each of your angles. For example, if you are using 10 angles, make a 5 x 2 grid on the paper.
Use a protractor to make the 10 angles. Be sure to jumble the angles. For example, jump from 5 degrees to 175 degrees to 30 degrees. Do not go in order.
Add two blank lines under each angle. Label one blank "Degrees" and label the other "Type." Students will write the angle measured into the "Degrees" blank. Students will right either "acute," "obtuse" or "right" into the "Type" blank.
Take the test yourself and time how long it takes to complete the worksheet. Add in a few seconds and use that value as the student time limit.
Give the sheet to the students and allow them to complete it in the allotted time. Over time, their protractor skills will improve.