There are 3 angles, ray, ray and meet at vortex.
<WYD = 90degrees Corresponding to <KWA
<YDA = 115degrees Corresponding to <WAL
<DEB = 80degrees Alternate Interior <EBC
<EFS = 45degrees Alternate Exterior <XCN













Parallel Lines?

 Their parallel, because the corresponding angles are equal.

Not parallel, because the adjacent angles are not supplementary.
(Supplementary adds up to 180 degrees)

These angles are parallel because the alternate exterior angles are equal.