a

h

D

c

Hilfslinie und Winkel

A = (-20, 0)
B_1 = (-5, 0)
f = Line(A, B_1)
a_1 = 5 (slider from 1 to 5)
c_1 = Circle(A, a_1)
C_1, B = Intersect(c_1, f)
E = Midpoint(A, B)
g = OrthogonalLine(E, f)
h_1 = 2.7 (slider from 1 to 5)
d_1 = Circle(E, h_1)
F, G = Intersect(d_1, g)
i = OrthogonalLine(G, g)
a = Segment(A, B)
D_1 = 0.9 (slider from 0 to 5)
e = Circle(G, D_1)
H, D = Intersect(e, i)
c_2 = 2.2 (slider from 1 to 5)
k = Circle(D, c_2)
C, J = Intersect(k, i)
c = Segment(D, C)
b = Segment(C, B)
d = Segment(D, A)
α = Angle(B, A, D)
δ = Angle(A, D, C)
γ = Angle(D, C, B)
β = Angle(C, B, A)
j = OrthogonalLine(D, c)
K = Intersect(j, a)
h = Segment(D, K)
δ_1 = Angle(A, D, K)
ζ = Angle(D, K, A)
δ_2 = Angle(K, D, C)
l = false