UVYZ is a square (all angles 90°) and WXYZ is a trapezium.

\(\angle VYZ = 90°\) (square).
From the figure, \(\angle ZYX\) in the trapezium is 55°.
\(\angle VYX = \angle VYZ + \angle ZYX = 90° + 55° = 145°\).

Final Answer: 145°