a)

B_2 = (8.28890909090909, -1.0854545454545483)
B_1 = (0.7689090909090914, -0.8054545454545485)
D = (6.1089090909090915, -1.0254545454545485)
F = (11.328909090909091, -0.7854545454545483)
H_1 = (16.48890909090909, -1.1854545454545484)
O = (14.095543706293704, -0.48106351981352335)
C_1 = (16.1179796037296, -2.3619289044289076)
c = Circle(O, C_1)
G = (23.681889860139858, -2.483275058275061)
J = (31.8929796037296, -2.7057430069930097)
A = Point(c)
a = Line(O, A)
g = OrthogonalLine(A, a)
N = Point(g)
X = Segment(A, N)
B = Intersect(c, a, 2.0)
m = Ray(A, O)
α = Angle(N, A, O)