Q.9 If \(\triangle ABC and \triangle PQR \) are to be congruent, name one additional pair of corresponding parts. What criterion did you use?

In \(\triangle ABC and \triangle PQR \)

\(\angle ABC = \angle PQR \)

\(\angle BCA = \angle PRQ \)

The other additional pair of corresponding part is BC = QR

\(\therefore \triangle ABC \cong \triangle PQR \)