A = (-1.1400000000000001, 2.52)
B = (2.32, 4.119999999999999)
a = Segment(A, B)
M = Midpoint(A, B)
c = Circle(M, B)
C = Point(c)
poly1, d, a_1, b = Polygon(A, B, C)
α = Angle(A, C, B)