Example : Draw a square of side 4.5 cm.
Solution: Initially it appears that only one measurement has been given. Actually we have many more details with us, because the figure is a special quadrilateral, namely a square. We now know that each of its angles is a right angle.
This enables us to draw ∆ ABC using SAS condition. Then D can be easily located. Try yourself now to draw the square with the given measurements.