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Cible atteinte! Bravo.

A = (-5.73, 0.12)
r1 = 10 (slider from 1 to 16, step 1)
B = Point(Circle[A, r1])
B' = Rotate(B, 40°, A)
g = Ray(A, B')
r2 = 8 (slider from 1 to 16, step 1)
c = Circle(B, r2)
C = Intersect(c, g, 2)
B'_{1} = Rotate(B, -30°, C)
j = Ray(C, B'_{1})
h = Segment(A, C)
k = OrthogonalLine(A, h)
f = Segment(A, B)
C_{1} = Midpoint(f)
Cible = Intersect(k, j)
Cible2: Cible
texte3: "" + r1 + " cm"
α = Angle(B, A, B')
i = Segment(C, B)
D = Midpoint(i)
texte1: "" + r2 + " cm"
β = Angle(B'_{1}, C, B)
l = Segment(A, Cible)
m = Segment(Cible, B)
n = Segment(C, Cible)
γ = Angle(Cible, A, C)