nnodes = 10
maxx = 4
maxy = 4
A = (-1.42, -0.36)
B = (0.12, 3.28)
C = (-1.86, 3.28)
D = (1.34, 2.76)
E = (0.48, 0.84)
F = (1.02, -0.94)
G = (-3, 0.36)
H = (2.82, 0.78)
I = (-1.3, 1.28)
J = (-2.38, 2.1)
u = Vector(A, E)
v = Vector(H, D)
w = Vector(C, I)
z = Vector(G, J)
a = Vector(I, J)
b = Vector(E, F)
c = Vector(F, H)
d = Vector(D, B)
e = Vector(I, B)
f = Vector(B, I)
g = Vector(A, I)
h = Vector(E, D)