Lines p and q are parallel. Two distinct transversals r and s intersect them between the parallel lines. Transversal r meets p at M and q at N. Transversal s meets p at P and q at Q.
a. (i) The angle between p and r at M on the upper left side is 58∘. Calculate the angle between q and r at N that lies on the lower left side.
b. (ii) The angle between p and s at P on the upper left side is 118∘. Find the angle between q and s at Q on the lower right side.