nodes (or vertices)

edges

(or links)

A = (-2.18, 4.2)
B = (-2.74, 3.06)
C = (-1.72, 2.14)
D = (0.16, 3.92)
E = (1.52, 5.4)
F = (1.92, 1.66)
G = (-3.48, 0.78)
H = (-4.14, 5.7)
I = (-4.08, 4.22)
J = (-0.62, 5.26)
a = Segment(H, J)
c = Segment(B, D)
d = Segment(J, D)
e = Segment(D, E)
f = Segment(J, A)
g = Segment(A, B)
h = Segment(B, I)
i = Segment(G, C)
j = Segment(C, F)
k = Segment(D, C)
l = Segment(D, F)
K = (0.34, 5.94)
L = (-0.38, 5.5)
u = Vector(K, L)
M = (1.26, 5.52)
v = Vector(K, M)
N = (-3.4, 2.92)
O = (-3.52, 3.5)
w = Vector(N, O)
P = (-3.1, 1.98)
Q = (-2.58, 1.72)
z = Vector(P, Q)