Triangles semblants

( donats 2 angles iguals )

A = Point(xAxis)
B = Point(xAxis)
a = Line(A, B)
C = (-9, 5)
α = Angle(B, A, C)
B' = Rotate(B, 43*°, A)
β = Angle(B, A, B')
b = Line(A, B')
c = Segment(B, A)
D = (3.1557484998286207, 6.16106115344414)
d = Segment(B, D)
γ = Angle(D, B, A)
E = Point(d)