A: (6, 1, 4.5)
B: (9, 0, 3)
C: (12, 3, 4.5)
D: (9, 4, 6)
E: (0, 7, 1.5)
F: (3, 6, 0)
G: (6, 9, 1.5)
H: (3, 10, 3)
f = Segment(A, B)
g = Segment(B, C)
h = Segment(C, D)
i = Segment(D, A)
j = Segment(A, E)
I = Point(j)
r = Segment(C, G)
t = Segment(G, H)
k = Segment(G, F)
l = Segment(F, E)
m = Segment(I, H)
n = Segment(D, H)
p = Segment(B, F)