if A=D and C =F which additional statement does not allow you to conclude that ABC=DEF?1. AC=DF2.B=E3.BC=EF4.AB=DE

Given that 2 of the angles are congruent, we can conclude that the others angles are congruent too, because the sum of inner angles of a triangle is equal to 180. So the additional information we need is
[tex]\angle B\cong\angle E[/tex]And having that we could use AAA criteria. Also we could need AC = DF and use ASA criteria.