E = (-0.4320483971205795, 0.4912103511677395)
F = (10.647318005068367, 0.4580385954725632)
a = Segment(E, F)
H = (-0.13350259586399105, -7.138293458722852)
b = Segment(F, H)
c = Line(H, a)
d = Circle(H, a)
G = Intersect(d, c, 2.0)
e = Segment(E, G)
O = Intersect(b, e)
đa giác1, a_1, b_1, c_1, d_1 = Polygon(E, F, H, G)
α = Angle(E, F, O)
β = Angle(G, H, F)