A = (-6.76, 1.48)
B = (5.5, 1.48)
r = Line(A, B)
P = (-3.92, 2.44)
Q = (1.86, 3.48)
P' = Mirror(P, r)
a = Segment(P', Q)
M = Intersect(r, a)
PMQ = PolyLine(P, M, Q)