If a dot reaches 0 on the protractor, begin adding 2 to the angular position so that the position is always increasing. You can ignore the linear position columns for now. The starting position of each dot and the position column for the blue dot is already filled in for you, first in terms of pi and second as a decimal. You will need to make sure to set the protractor so that the blue dot is at an angle of zero at the point where you set the stopwatch to zero