Hình 25

B_2 = (8.28890909090909, -1.0854545454545483)
B = (0.7689090909090914, -0.8054545454545485)
D = (6.1089090909090915, -1.0254545454545485)
O = (9.70890909090909, 0.17454545454545156)
F = (11.328909090909091, -0.7854545454545483)
e = Circle(O, F)
H = (16.48890909090909, -1.1854545454545484)
M = Point(e)
N = Point(e)
O_1 = (11.22890909090909, 4.354545454545451)
g = Segment(M, N)
h = Segment(O_1, M)
β = Angle(N, M, O_1)