Find angles OLN and MNL.
angle(OLN) and angle(MNL) are alternate interior angles of parallel lines, so they are congruent.
---> 4k + 8 = 5k - 8 ---> 16 = k
angle(OLN) = 4k + 8 = 4(16) + 8 = ...
angle(MNL) = 5k - 8 = 5(16) - 8 = ...
