1. Let point P be the vertex of the angle. Place the compass on point P and draw an arc across both sides of the angle. Label the intersection points Q and R.

2. Place the compass on point Q and draw an arc across the interior of the angle.

3. Without changing the radius of the compass, place it on point R and draw an arc intersecting the one drawn in the previous step. Label the intersection point W.

4. Using the straightedge, draw ray PW. This is the bisector of ÐQPR.