PQR = XYZ. Complete the congruence statement XZY ? XZY

Two triangles are congruent if they have the same side lengths and angle measures.
Then if PQR and XYZ are congrent, then this relation works in both directions:
[tex]\Delta PQR\cong\Delta XYZ\Rightarrow\Delta XYZ\cong\Delta PQR[/tex]