is △YXZ ≅△AZX reflexive property

No, the statement that △YXZ ≅ △AZX is not an example of the reflexive property. The reflexive property states that any object, shape, or number is always congruent to itself. In this case, △YXZ and △AZX are two different triangles, so they are not congruent to each other by the reflexive property.