By applying the ASA rule, it is to be established that,  $∆ABC\cong ∆PQR$; then the information required is _______

For  $ASA$ (Angle-side-angle)congruence rule, we need the two angles $\angle \mathrm{B}=\angle \mathrm{Q} , \angle \mathrm{C}=\angle \mathrm{R}$ and a corresponding side between these angles i.e BC = QR.