1. Draw a line l.
2. Take any point Q on L and a point P outside L and join PQ.
3. Make sure that angles at point P and point Q are equal i.e. \(\angle Q = \angle P \)
4. At point P extend line to get line M which is parallel L.
5. Then take any point R on line M.
6. At point R draw angle such that \(\angle P = \angle R \)
7. At point R extend line which intersects line L at S and draw a line RS.