<span>Congruence between two triangles means six items, all three sides and all three angles, are congruent. Thus the statement ABC DEF has a very precise meaning. It succinctly summarizes the six statements (assume lines atop these segments): ABDE, BCEF, ACDF, AD, BE, and CF. It is very important to maintain the vertices in the proper order. Not doing so is a common mistake.</span>
That's 5 lengths for a three sided shape... Are you sure that is the instructions?
You have the correct answer on your paper so you should be good if not let me know what else you need:)
