A = (4.992437268860946, 4.143160965236687)
B = (-1.323897281804734, -2.55803984837278)
C = (12.146421921227809, -2.0826168176775135)
đa giác1, c, a, b = Polygon(A, B, C)
M = Midpoint(a)
d = Segment(A, M)
e = Segment(B, M)
f = Segment(M, C)