A = (0, 0, 0)
a = 1.5 (slider from 1 to 8, step 0.1)
b = 1.3 (slider from 1 to 8, step 0.1)
B: (0, 0, a)
C: (0, 0, (-a))
c, d, e = Cone(B, A, b)
f, g, h = Cone(C, A, (-b))
D = (-6.4407377259755645, 0.9720507476068061, 0)
E = (-0.6886511962256936, 3.536825517338535, 0.4294753406017371)
F = (1.0260154478179473, -2.2328977349011616, 0.2648085037254999)
i = Plane(D, E, F)
G = PointIn(e)
H = PointIn(e)
I = PointIn(h)
J = PointIn(h)
K = PointIn(i)
j = Plane(H, G, J)
L = PointIn(j)