A = (-1.28, 3.68)
B = (-1.32, 6.04)
c = Circle(A, B)
C = Point(c)
D = Point(c)
E = Point(c)
a = Segment(E, D)
b = Segment(E, C)
d = Segment(A, C)
e = Segment(A, D)
α = Angle(D, A, C)
β = Angle(D, E, C)