CTET 2 Math and Science Jan 2021 Paper

Two triangles are congruent if their corresponding sides are equal in length, and their corresponding angles are equal in measure In $\mathrm{\Delta }\mathit{A}\mathit{B}\mathit{C}$ and $\mathrm{\Delta }\mathit{D}\mathit{E}\mathit{F}$, if
$\mathit{A}\mathit{B}=\mathit{E}\mathit{F},\mathit{B}\mathit{C}=\mathit{D}\mathit{E}$ and $\mathit{C}\mathit{A}=\mathit{F}\mathit{D}$
The corresponding side of the $△\mathrm{ABC}$ and $△\mathrm{FED}$ are equal and their corresponding angles are also equal $\therefore △\mathrm{ABC}\cong △\mathrm{FED}$