O: (-1, 1)
A: (3, 2)
c = Circle(O, A)
B = Point(c)
C = Point(c)
f = Tangent(B, c)
g = Tangent(A, c)
h = Tangent(C, c)
i = Segment(O, C)
j = Segment(O, A)
k = Segment(O, B)
C' = Intersect(f, g)
A' = Intersect(h, f)
B' = Intersect(h, g)
l = Line(A', A)
m = Line(B', B)
n = Line(C', C)
γ = Angle(O, B, C')
δ = Angle(C', A, O)
ε = Angle(O, C, A')