M = (0.52, 1.48)
P = (1.56, 2.84)
k = Circle(M, P)
m: (y(P) - y(M)) / (x(P) - x(M))
r = Segment(M, P)
t: 1.0 y = -1.0 * 1.0 / m * 1.0 x + y(P) + 1.0 / m * x(P)