Draw a circle with center O with radius 5 cm. Draw any one of the diameters. With same center A, draw another circle with radius 3 cm. Draw any one of the diameters for this circle too. If you join the ends of both the diameters, the figure you will get is:
Parallelogram
Draw the circles and the diameters. You will get:
If you mark the diameter of smaller circle as AB and larger circle as CD, after joining them you will get:
Fig. ABCD is a parallelogram. When AB is perpendicular to CD, ABCD becomes a rhombus.