FIG. 1 is a perspective view of a protractor with a movable arm according to the present invention;
FIG. 2 is a front view of the protractor of FIG. 1;
FIG. 3 is an end view of the protractor of FIG. 1;
FIG. 4 is a side view of the protractor of FIG. 1; and,
FIG. 5 is a rear view, opposite the view of FIG. 2, of the protractor of FIG. 1.