The naming convention in a congruence statement is very specific.
XY = MN
Practice makes perfect
To complete the statement, we have to pair XY with its congruent corresponding side in △ XYZ. We can do that by examining the statement △ XYZ ≅ △ MNL. The naming convention in a congruence statement is very specific. Corresponding vertices have to be presented in the same order.
△ X YZ ≅ △ M NL
The vertices X and M are corresponding as are Y and N. This must mean that XY and MN are corresponding sides.
XY = MN