Figuur I

G = (-2, -19)
straal = 3 (slider from 0 to 5, step 0.1)
A: (-9, -14)
c = Circle(A, straal)
B = PointIn((x - x(A))^(2) + (y - y(A))^(2) > straal^(2))
f, g = Tangent(B, c)
C = Intersect(c, f)
h = Segment(C, A)
i = Line(B, A)
D, E = Intersect(c, i)
j = Segment(B, D)
m = Segment(B, C)
L = (1, -12)
N = (2, -12)
i_1 = Segment(L, N)
O = (3, -12)
j_1 = Segment(N, O)
P = (4, -12)
k_1 = Segment(O, P)
k = Segment(D, A)
l = Segment(A, E)