The square deforms into the position shown by the dashed lines in $($Figure $1).$ The

dimensions are $S=56mm,S^{\text{'}}=59mm,x_1=2mm,$ and $x_2=6mm.$

Side $D^{\text{'}}B\text{'}$ remains horizontal.

Figure

Determine the shear strain at A $,$ B$,$ C$,$ and D relative to the x$,$ y axes.