Figuur II

E = (1, -19)
straal = 3 (slider from 0 to 5, step 0.1)
d = Circle(E, straal)
I = Point(d)
a = Line(I, E)
M = Intersect(d, a, 2)
p_1 = CircleArc(E, I, M)
G = Point(p_1)
h_1 = CircleArc(E, I, G)
K = Point(h_1)
k_1 = CircleArc(E, I, K)
p = Segment(I, G)
q = Segment(G, K)
L = Point(k_1)
b = Segment(L, G)
f_1 = Segment(L, I)
g_1 = Segment(I, K)
e = Line(K, E)
J = Intersect(d, e, 2)
m = Segment(G, J)
s = Segment(K, J)
t = Segment(J, L)
δ = Angle(I, L, J)
ε = Angle(J, L, G)
ζ = Angle(G, K, J)
η = Angle(J, K, I)
q_1 = CircleArc(E, G, J)
r_1 = CircleArc(E, J, I)