Question 1
Draw any line segment ¯¯¯¯¯¯¯¯PQ. Without measuring ¯¯¯¯¯¯¯¯PQ, construct a copy of ¯¯¯¯¯¯¯¯PQ
Steps of construction:
(i) Given ¯¯¯¯¯¯¯¯PQ whose length is not known.
(ii) Fix the compasses pointer on P and the pencil end on Q. The opening of the instrument now gives the length of ¯¯¯¯¯¯¯¯PQ.
(iii) Draw any line 'l'. Choose a point A on 'l'. Without changing the compasses setting, place the pointer on A.
(iv) Draw an arc that cuts 'l' at a point, say B. Hence, ¯¯¯¯¯¯¯¯AB is the copy of ¯¯¯¯¯¯¯¯PQ.