When we point out the congruence of triangles ABC and XYZ,
which we denote by [tex]ABC\cong XYZ[/tex], the order of the letters is very important.
What we understand from [tex]ABC\cong XYZ[/tex] is :
[tex]\angle A \cong \angle X\\\\\angle B \cong \angle Y\\\\\angle C \cong \angle Z[/tex]
and:
[tex]AB \cong XY\\\\BC \cong YZ\\\\ AC \cong XZ[/tex]
Following this logic of preserving the order precisely, side CA is congruent to ZX
Answer: D) ZX
