A compass can also be used to transfer angles.

Transfer the angle [[$ \alpha $]] geometrically to a point P on the line m.

1. Draw two circular arcs of the same radius, the central points of which are the points O and P.
2. Measure the chord corresponding to the arc AB with a compass. Draw a chord of corresponding length (CD).
3. Draw a ray PD starting at point P to form an angle CPD or [[$\alpha$]].