En utilisant seulement la fonction “Milieu ou centre”
et la fonction “Cercle centre-point”, reproduis
exactement la même figure. 
Indice : Tous les centres des cercles sont des milieux
de segment.

A = (-1.8, 4.26)
B = (-1.8, 0.5)
poly1, f, g, h, i, C, D = Polygon(A, B, 4)
E = Midpoint(B, D)
F = Midpoint(E, D)
G = Midpoint(B, E)
H = Midpoint(E, G)
I = Midpoint(E, F)
c = Circle(I, H)
d = Circle(H, I)
J = Midpoint(E, A)
K = Midpoint(E, C)
L = Midpoint(K, E)
M = Midpoint(J, E)
e = Circle(M, L)
k = Circle(L, M)
N = (3.92, 4.3)
O = (3.92, 0.48)
poly2, j, l, m, n, P, Q = Polygon(N, O, 4)
R = Intersect(j, n)
S = Intersect(m, n)
T = Intersect(l, m)
U = Intersect(j, l)