Complete the congruence statement given below.

$△BCA\cong △\_\_\_$

In a squared sheet, draw two triangles of equal areas such that the triangles are not congruent.

What can you say about their perimeters?

If $\mathrm{\Delta }\mathrm{A}\mathrm{B}\mathrm{C}$ and $\mathrm{\Delta }\mathrm{P}\mathrm{Q}\mathrm{R}$ are to be congruent, then $BC=\_\_\_\_\_$ $(PR / QR )$