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The parallelogram OKAY is not unique...    To be unique, the angle OKA  or another angle may be given.

construction.  Take any angle for OKA.

draw a horizontal line segment OK of length 5.5 cm.  At K draw a line inclined to OK at the angle  OKA.  Using your drawing instruments, draw an arc of radius KA = 4.2 cm cutting this inclined line.   The point of intersection is A.

From A draw a horizontal line parallel to OK through A.  Now draw an arc of radius 5.5 cm from A cutting this line.. That point is Y.  Join AY and YO.

1 5 1
It cannot be constructed as any of it's angles is not given
0 0 0
No,it's not unique.......
1.Draw a line and cut 5.5cm from it(OK)
2.Construct an angle of any magnitude on one end of it
3.Construct another angle of same magnitude as the supplementary angle of the already drawn angle on the other end of the line(or draw a line parallel to the line forming the angle)
4.Now,u have three lines......find the fourth line by drawing a line parallel to OK
1 3 1
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