F = (0, 7)
B = (0, 2)
a = Segment(F, B)
C = (5, 2)
b = Segment(B, C)
D = (5, 7)
c = Segment(C, D)
d = Segment(D, F)
E = (2.5, 4.5)
h = 1.7000000000000002 (slider from -10 to 10, step 0.1)
k = Circle(E, h)
Polar(E, k)
Polar(E, k)
Polar(E, k)
A = Point(k)
G = Point(k)
H = Point(k)
e = Segment(E, A)