Mặt trời

O = Intersect(yAxis, xAxis)
a = 4 (slider from 0 to 15, step 0.1)
c = 2.8 (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: (-(c); 0.0)
M_3 = Point(E)
d = Segment(F, M_3)
g = Line(F, F_1)
M_2 = Point(E)
đa giác1, a_1, f, m = Polygon(F, M_3, M_2)
e = Segment(F, M_2)
h = Segment(M_3, M_2)
M'_1 = Point(E)
M'_2 = Point(E)
i = Segment(F, M'_1)
j = Segment(M'_1, M'_2)
k = Segment(M'_2, F)
đa giác2, b_1, f_1, a_2 = Polygon(F, M'_1, M'_2)