A = (-1.5327877113299397, -0.16232898210418345)
C = (-0.9547628174515445, 0.8248174275712576)
a = Segment(A, C)
B = (0.32890285596670976, -0.16232898210418345)
b = Segment(A, B)
α = Angle(B, A, C)