The naming convention in a congruence statement is very specific.
m∠ Y = m∠ N
Practice makes perfect
To determine m∠ Y, we have to pair it with its congruent corresponding angle in △ MNL. 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
Since they are both in the center position, ∠ Y and ∠ N have to be corresponding angles. This means, for the triangles to be congruent, ∠ Y and ∠ N must also be congruent making their measures equal.
m∠ Y = m∠ N
