Construction 3: To construct an angle of 600 at the initial point of a given ray.
Steps of Construction:
- Taking A as centre and some radius, draw an arc of a circle, which intersects AB, say at a point D.
- Taking D as centre and with the same radius as before, draw an arc intersecting the previously drawn arc, say at a point E.
- Draw the ray AC passing through E. Then ∠ CAB is the required angle of 60°.