Given same line segment`bar AB`,whoe length is not known.Construct `bar PQ` such that the length of `barPQ` is twice that of `bar AB`.

Given barAB a line segment whose length = 5 cm,construct bar PQ such that the length of bar PQ is twice that of bar AB .

Given barAB of length 3.9 cm, construct bar PQ such that the length of bar PQ is twice that of bar AB .Verify by measurement.

Given barAB of length 7.3 cm and bar CD of length of 3.4 cm,, construct bar XY such that the length of bar XY is twice that of bar AB and bar CD .Verify by measurement.

Draw a line segment of length 5cm.Construct the perpendicular bisector of this line segment.

Draw any line segment barPQ .Without measuring bar PQ ,construct a copy of bar PQ .

Draw any line segment barAB without measuring bar AB consturct a copy of bar AB .

Draw any line segment bar PQ .Take any point R not on it.Through R draw a perpendicular to bar PQ .

Draw a line segment AB of length 7 cm.Mark a point P on AB such that AP=2 cm.Draw a line through P perpendicular to the line segment AB.

Construct a line segment of length 5.6 cm using ruler and compasses.

Two points are taken at random on the given straight line segment of length a. The probability for the distance between them to exceed a given length b, where 0 lt b lt a , is