Answer: A. transitive property of congruence
Explanation:
- Transitive property of congruence says" If two segments or two angles are each congruent to a third segment or angle respectively, then they are congruent to each other".
For example if
and

Then
or if
and

Then [tex]\angle{A}=\angles{C}[tex]
Thus, if angle W is congruent to angle X and angle x is congruent to angle y then angle w is congruent to angle y by Transitive property of congruence.