a = 4 (slider from 0 to 5)
b = 3 (slider from 0 to 5)
c = 2 (slider from 0 to 5)
Bi_1 = (-4.687859383450514, -4.004933477555435)
Bi_2 = (-2.9278593834505133, -3.9969334775554355)
E_2: (a, 0, (-c))
E_1: ((-a), 0, (-c))
E_3: (a, 0, c)
E_4: ((-a), 0, c)
Eb_1 = Polygon({E_1, E_2, E_3, E_4})
gl1: x^(2) / a^(2) + y^(2) / b^(2) + z^(2) / c^(2) = 1
E_5: (0, (-b), (-c))
E_6: (0, b, (-c))
E_7: (0, b, c)
E_8: (0, (-b), c)
Eb_2, e_5, e_6, e_7, e_8 = Polygon(E_5, E_6, E_7, E_8)
Text1: "" + gl1 + ""
A_1: ((-a), (-b), 0)
A_2: (a, (-b), 0)
A_3: (a, b, 0)
A_4: ((-a), b, 0)
Eb_3, a_1, a_2, a_3, a_4 = Polygon(A_1, A_2, A_3, A_4)