r

r

Hilfe

M = (-13.5, 2)
r_1 = 1.8 (slider from 0 to 5)
c = Circle(M, r_1)
A_1 = Point(c)
f = Line(A_1, M)
A, B = Intersect(c, f)
g = Segment(A, B)
C = Point(c)
d = CircleArc(M, B, A)
h = Segment(A, C)
i = Segment(C, B)
α_1 = Angle(A, C, B)
r = Segment(C, M)
α = Angle(M, A, C)
β = Angle(C, B, M)
γ_1 = Angle(A, C, M)
γ_2 = Angle(M, C, B)
δ_1 = Angle(C, M, A)
δ_2 = Angle(B, M, C)
j = Segment(A, M)
k = Segment(M, B)
a = true