AB² \; + \; AC² \; = \; 2m² \; + \;  \frac{ a² }{2 } 

A = (-0.11024592704479833, 1.1250900997158784)
B = (-1.3601309248467828, 0.08914938081693652)
C = (0.6179153029059083, 0.09290278921874429)
Tên đa giác1, c, a, b = Polygon(A, B, C)
I = Midpoint(a)
d = Segment(B, I)
e = Segment(I, C)
m = Segment(A, I)