Determine the midpoint of the segment joining (a,0)(a, 0)(a,0) and (0,b)(0, b)(0,b).
(a/2,b/2)(a/2, b/2)(a/2,b/2)
(a+b,0)(a+b, 0)(a+b,0)
(a/b,b/a)(a/b, b/a)(a/b,b/a)
(0,0)(0, 0)(0,0)