B = (63.84668588820423, -14.691768493661634)
C = (52.3830259745534, -9.096410678665396)
a = 4.1 (slider from 0 to 10, step 0.1)
A = (42.09893536239138, -15.194303927338378)
D = (46.01997303483099, -15.229003375767046)
b = Ray(A, D)
c = Circle(A, a)
E = Intersect(c, b, 1.0)
đa giác1, d, e, f, g, F, G = Polygon(A, E, 4.0)
H = Midpoint(f)
I = Midpoint(g)
h = OrthogonalLine(H, f)
i = OrthogonalLine(I, g)
J = Intersect(h, i)
k = Circle(J, H)
K = Intersect(e, i)
L = Intersect(h, d)
j = Segment(H, L)
l = Segment(I, K)
p = CircleSector(E, K, L)
s = CircleSector(A, L, I)