Given: Line segment WZ is congruent to line segment YZ. Line segment WX is parallel to line segment ZY

Prove: triangle WXZ is congruent to triangle YZX.

In your problem where states the given that a line segment Wz is congruent to line YZ. The line segment WX is parallel to line segment ZY so the ask of the problems is to prove that WXZ is congruent triangle to triangle YZX nad the reason that prove that both angle is congruent is the the given where WZ and ZY is congruent so the both have the same size and the WX is parallel to ZY so it means that they are also, form that reason itself proves that both triangle are equal.