Write down coordinates of A,B,C and D.

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A1 = 1
a_2 = Random(-4, 3)
C1: a_2
G1: a_2
C3: a_2
G3: a_2
a_3 = Random(2, 3)
E1: a_2 + a_3
I1: a_2 + a_3
a_4 = Random(2, 3)
I3: G3 + a_4
E3: a_2 + a_4
a_1 = Random(-8, 8)
D3: a_1 + a_3
F1: a_1 + a_4
H1: a_1 + a_4
B1: a_1
D1: a_1
B3: a_1
A2 = 2
A3 = 3
b_1 = Random(1, 3)
D2: b_1 - a_3
F2: b_1 + a_3
F3: a_1 + b_1
H3: F3 + a_3
B2: b_1
H2: b_1
b_2 = Random(-4, -1)
I2: b_2 + a_4 + a_3
E2: b_2 + a_4
G2: b_2 + a_4
C2: b_2
matrix1: {{A1, B1, C1, D1, E1, F1, G1, H1, I1}, {A2, B2, C2, D2, E2, F2, G2, H2, I2}, {A3, B3, C3, D3, E3, F3, G3, H3, I3}}
m = Random(1, 3)
l = Element(matrix1, m, 9)
k = Element(matrix1, m, 8)
j = Element(matrix1, m, 7)
i = Element(matrix1, m, 6)
h = Element(matrix1, m, 5)
g = Element(matrix1, m, 4)
f = Element(matrix1, m, 3)
e = Element(matrix1, m, 2)
A = Point({e, f})
B = Point({g, h})
a = Segment(A, B)
D = Point({k, l})
b = Segment(B, D)
C = Point({i, j})
c = Segment(D, C)
d = Segment(C, A)
n: false
text2: "A(" + (LaTeX[e]) + "," + (LaTeX[f]) + ")  \space , \space B(" + (LaTeX[g]) + "," + (LaTeX[h]) + ") \space , \space C(" + (LaTeX[i]) + "," + (LaTeX[j]) + ") \space , \space D(" + (LaTeX[k]) + "," + (LaTeX[l]) + ")"