A = (-1, 0)
B = (0, 0)
a_1 = Line(A, B)
C = Point(a_1)
D = (-0.14, 0.68)
b_1 = Line(A, D)
c = Line(B, D)
d = Line(C, c)
u = Segment(A, B)
a = Segment(A, C)
b = Segment(A, D)
E = Intersect(b_1, d)
ab = Segment(A, E)