Find the coordinates of the midpoint of the line segment joining
(i) A(3,0) and B(-5, 4) (ii) P(-11, -8) and Q(8, -2).
A(3, 0) is the midpoint of the line joining P(3, 3) and Q(3, -3).
Find the midpoint of the line segment joining the points A(12, 8) and B(4, 6).