a)

b)

B_2 = (5.28, -1.24)
O = (3.982975206611569, 1.3069421487603339)
B_1 = (6.928429752066112, -1.0385123966942102)
c = Circle(O, B_1)
A = Point(c)
D = (0.1937024793388439, -4.49051239669421)
a = Ray(A, D)
E = (8.64170247933884, -3.41251239669421)
b = Ray(A, E)
B = Intersect(c, a, 2.0)
C = Intersect(c, b, 2.0)
α = Angle(B, A, C)
O1 = (13.613702479338835, 0.9434876033057868)
I = (15.681702479338844, -2.3565123966942108)
d = Circle(O1, I)
A1 = Point(d)
K = (9.27970247933884, -2.9065123966942106)
e = Ray(A1, K)
L = (20.037702479338833, -2.136512396694211)
f = Ray(A1, L)
B1 = Intersect(d, e, 2.0)
C1 = Intersect(d, f, 2.0)
β = Angle(B1, A1, C1)
g = CircleArc(O, B, C)
h = CircleArc(O1, B1, C1)