O_1 = Intersect(yAxis, xAxis)
a = 4 (slider from 0 to 15, step 0.1)
c = 2.9 (slider from 0 to 15, step 0.1)
b: sqrt(a^(2.0) - c^(2.0))
E: x^(2.0) / a^(2.0) + y^(2.0) / b^(2.0) = 1.0
F_1: (c; 0.0)
F_2: (-(c); 0.0)
M = Point(E)
d = Segment(F_2, M)
e = Segment(M, F_1)
O = Intersect(yAxis, xAxis)
A_1, A_2 = Intersect(E, xAxis)
B_2, B_1 = Intersect(E, yAxis)
f = OrthogonalLine(M, yAxis)
g = OrthogonalLine(M, xAxis)
A, B = Intersect(E, f)
C, M_2 = Intersect(E, g)
h = OrthogonalLine(B, xAxis)
M_1, M_3 = Intersect(E, h)
i = Segment(M_1, M)
j = Segment(M, M_2)
k = Segment(M_2, M_3)
l = Segment(M_3, M_1)