A = (-0.9540740740740745, 0.6004938271604923)
B = (0.3061728395061724, 0.5965432098765416)
f = Segment(A, B)
A' = Rotate(A, 120°, B)
α = Angle(A, B, A')
g = Segment(B, A')
D = Rotate(B, (-(45°)), A')
β = Angle(D, A', B)
h = Segment(D, A')
i = Line(D, f)
C = Point(i)
j = Segment(D, C)
γ = Angle(A', D, C)
a: (5 * 360 / 12)
b: (17 * 180)
c: (17 * 180 / 12)