A = (-1.2138365555555584, 3.577221162962961)
B = (0.725933266666665, 3.60346651111111)
C = (-0.18311015555555815, 1.8688875925925905)
poly1, c, a, b = Polygon(A, B, C)
p: 0.5 * (b - c + a)
d = Circle(C, p)
q: 0.5 * (c - a + b)
e = Circle(A, q)
r: 0.5 * (a - b + c)
f = Circle(B, r)