Carré
Author: Léo

A = (4.663972431687849, 6.659524738058116)
B = (19.379203056901787, 8.560930942439697)
a = Segment(A, B)
C = Midpoint(a)
c = Circle(C, A)
D = Point(c)
b = Line(D, C)
E = Intersect(c, b, 2)
poly1, a_1, d, b_1, e = Polygon(A, D, B, E)
α = Angle(A, D, B)
β = Angle(D, B, E)
γ = Angle(B, E, A)
δ = Angle(E, A, D)