The answer to your question is :-
Step 1:-Draw a line segment BC of any measurement.
Step 2:-Now, B as centre and any radius draw an arc give it as arc (RS).
Step 3:-Where the arc rs cut the line segment BC give that point as P.Now, with P as centre and same radius cut another arc which intersect the arc RS at point X.
Step 4:-With X as centre and same radius cut another arc which intersect the arc RS at point Y.
Step 5:-with X as centre and any radius cut an arc and now,Y as centre and same radius cut another arc which intersect the first arc.
Step 6:-Now taking Z as centre and radius ZP cut another arc.Now taking P as centre and same radius cut another arc which intersect the first arc at point Q.
Step 7:-Join BQ.
hope it helps !
thumbs up !