Question

look at this diagram: if (overleftrightarrow{tv}) and (overleftrightarrow{wy}) are parallel lines and (mangle vus = 123^{circ}), what is (mangle yxu)?

Explanation:

Step1: Identify angle - relationship

$\angle VUS$ and $\angle YXU$ are corresponding angles.

Step2: Apply property of corresponding angles

When two parallel lines are cut by a transversal, corresponding angles are congruent. So $m\angle YXU=m\angle VUS$.

Answer:

$123$