Question

construct a line segment AB without measuring now construct XY such that X Y is equal to 2 AB

Answer 1

extend the line from B.
with a circular take B as centre,with radius (length of AB) ,draw an arc,such that the line extended was cut by u...
this line from B to the arc was to be joined with AB.and name it BY.
now ur required line is A Y...

Answer 2

pic 1; | pic 2;

answer:

1.make line ab

2.now put each tip of divider on each end of line as shown in pic 2.

3. bring the divider undisturbed and place it on the place you want to make XY.

4. now make line between two points of divider and turn the divider and place it on another end and join the line.

5.mark both ends as X and Y.