A = (-2.46, 1.18)
B = (-4.46, 7.26)
C = (-8.66, 2.7600000000000002)
c = CircleSector(A, B, C)
D = (-7.34, -3.36)
a = Line(D, A)
A' = Mirror(A, a)
B' = Mirror(B, a)
C' = Mirror(C, a)
c' = Sector(Mirror[Circle[A, B], a], B', C')
E = (6.86, -6.0200000000000005)
b = Line(E, B')
B'' = Mirror(B', b)
C'' = Mirror(C', b)
c'' = Sector(Mirror[Mirror[Circle[A, B], a], b], B'', C'')