A = (20.187934129075884, 30.572348517224864)
B = (15.027863576439294, 24.102413901226676)
C = (27.17387580033773, 23.983335350011984)
đa giác1, c, a, b = Polygon(A, B, C)
α = 2.1642082724729685 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
I = (19.473462821787745, 19.77589320709292)
A' = Rotate(A, -(α), I)
B' = Rotate(B, -(α), I)
C' = Rotate(C, -(α), I)
đa giác1', c', a', b' = Polygon(A', B', C')
d = Segment(B, I)
e = Segment(I, A)
f = Segment(C, I)
g = Segment(B', I)
h = Segment(A', I)
i = Segment(C', I)
k = CircleArc(I, B', B)
p = CircleArc(I, A', A)
q = CircleArc(I, C', C)