A_1 = (-3.1025118039529263, -5.8295169158404345)
B_1 = (16.663468242511733, -5.8295169158404345)
F = (16.224833456459816, 2.8335201086849935)
G = (19.213032936438523, 2.9157641310697286)
b = Segment(F, G)
B = (0.9822746411555825, -4.8425886472236135)
C = (8.685798071192435, -4.924832669608349)
a = Segment(B, C)
B' = Rotate(C, 295.0*°, B)
α = Angle(B', B, C)
c = Line(B, B')
d = OrthogonalLine(B, c)
e = LineBisector(a)
C_1 = Intersect(d, e)
f = Circle(C_1, C)
A = Point(f)
đa giác1, b_1, d_1, a_1 = Polygon(A, B, C)
g = OrthogonalLine(C, b_1)
h = OrthogonalLine(B, a_1)
E = Intersect(b_1, g)
D = Intersect(h, a_1)
i = Segment(E, C)
j = Segment(D, B)
β = Angle(D, C, E)
γ = Angle(D, B, E)
δ = Angle(B, D, C)
ε = Angle(B, E, C)