In parallelogram WXYZ, opposite angles are equal: \(\angle XWZ = \angle XYZ\).<br><br>Let each equal angle be x. Then \(\angle XWZ + \angle XYZ = 2x\).<br>From the figure, each of these opposite angles is 130&deg;.<br>Sum = 130&deg; + 130&deg; = 260&deg;.<br><br>Final Answer: 260&deg;