draw a line land take a point p on it through p draw a line segments pq perpendicular to l now draw a perpendicular pq at q use rular and compass
Please use line p instead of line l and perpendicular pq instead of perpendicular xy.
(1) Draw a line l and mark a point X on it.
(2) Taking X as centre and with a convenient radius, draw an arc intersecting line l at two points A and B.
(3) With A and B as centres and a radius more than AX, construct two arcs intersecting each other at Y.
(4) Join XY. is perpendicular to l.
Similarly, a perpendicular to at the point Y can be drawn. The line is perpendicular to at Y.