ABcong XZ if Delta ABCcong Delta XYZ then by CPCTC which is true? ABcong XY BCcong CB ABcong YX

If $\triangle ABC \cong \triangle XYZ$, then corresponding sides and angles are congruent. The order of the letters in the congruence statement tells us which parts correspond.<br /><br />Since A corresponds to X, and B corresponds to Y, the side AB corresponds to side XY. Therefore, $AB \cong XY$.<br /><br />So the correct answer is $\boxed{AB \cong XY}$.<br />