G = (19.108156525258156, -4.032679031037961)
J = (19.81352745320999, 2.2342703673033197)
M = (11.728891432838983, 2.1800110651531788)
B = (11.637637151950113, -3.428427711638664)
C = (21.700271368885346, -3.428427711638664)
đa giác1, a, a_1, b, A = Polygon(B, C, 3.0)
F = Midpoint(b)
E = Midpoint(a_1)
D = Midpoint(a)
c = Segment(A, D)
d = Segment(B, E)
e = Segment(F, C)
O = Intersect(c, d)