If ΔABC ≅ ΔDEF by SSS congruence, then, match the corresponding equal sides.
If three sides of one triangle are equal to the three sides of another triangle, then the two triangles are said to be congruent by S.S.S. congruence.
For ΔABC≅ΔDEF,
we have AB = DE, BC = EF and AC = DF in accordance with the definition of S.S.S. congruence CPCT condition.