Nthe figures, δcda ≅ δxyz . name the congruent angles. ∠c ≅∠y, ∠d ≅∠x, ∠a ≅∠z ∠c ≅ ∠z, ∠d ≅∠y, ∠a ≅∠x ∠c ≅ ∠x, ∠d ≅∠y, ∠a ≅∠z ∠c ≅ ∠d, ∠a ≅∠x, ∠y ≅∠z

When writing the congruent triangles, the otder of the letters is EXTREMELY important.
This is because, each angle in the first triangle is congruent to its corresponding angle in the second triangle and each side in the first triangle is congruent to its corresponding sode in the second triangle.

Now, we are given that triangle CDA is congruent to triangle XYZ.
Based on the above explanation, we can conclude that:
angle C is congruent to angle X
angle D is congruent to angle Y
angle A is congruent to angle Z

The third box is a function