If triangle ABC is congruent to triangle XYZ, then which of the following is congruent to segment XY?

When writing two congruent triangles, the order of writing the letters must be taken into consideration.

The angles/segments in the first triangle would be congruent to the corresponding angles/segments in the second triangle.

Applying this to the given, we would find that:

Triangle ABC is congruent to triangle XYZ, therefore:

AB is congruent to XY

BC is congruent to YZ

AC is congruent to XZ

angle A is congruent to angle X

angle B is congruent to angle Y

angle C is congruent to angle Z