A: (-1, 0)
O: (0, 0)
B = (1, 0)
f = Segment(A, B)
C = Point(f)
D_1 = Midpoint(A, C)
E = Midpoint(C, B)
D = CircleSector(O, B, A)
D1 = CircleSector(D_1, C, A)
D2 = CircleSector(E, B, C)
AireArbelos: D - D1 - D2
texte1 = LaTeX(AireArbelos, true, true)
F: (x(C), AireArbelos)