A = (-2.12, 2.16)
B = (4.76, 4.34)
C = (2.72, -1.22)
poligon1, c, a, b = Polygon(A, B, C)
D = Midpoint(A, B)
d = OrthogonalLine(D, c)
E = Midpoint(A, C)
e = OrthogonalLine(E, b)
F = Intersect(e, d)
f = Circle(F, A)