F = (42.14765253135163, 28.646406644985472)
B = (30.685768693099263, -1.801419747427249)
C = (53.11730822931095, -1.7311014416710995)
a = Segment(B, C)
b = LineBisector(a)
A = Point(b)
đa giác1, b_1, c, a_1 = Polygon(A, B, C)
d = OrthogonalLine(B, a_1)
e = OrthogonalLine(C, b_1)
H = Intersect(d, a_1)
K = Intersect(e, b_1)
f = OrthogonalLine(A, c)
I = Intersect(f, c)
g = Segment(A, I)
h = Segment(K, C)
i = Segment(B, H)
j = Segment(H, K)
α = Angle(C, I, A)
β = Angle(B, H, C)
γ = Angle(B, K, C)