β

α'

2α

Mittelpunktswinkel μ

Hilfslinie CM

Winkel ∡MCB

Winkel ∡ACM

Mittelpunktswinkel δ

Umfangs- und Mittelpunktswinkel zum Bogen BC

Umfangs- und Mittelpunktswinkel zum Bogen CA

2β

μ

Satz des Thales

A = Intersect(xAxis, yAxis)
B = Point(xAxis)
c = Semicircle(A, B)
f = Segment(A, B)
α_1 = 30 (slider from 0 to 90, step 1)
B' = Rotate(B, α_1°, A)
g = Ray(A, B')
C = Intersect(c, g, 2)
h = Segment(A, C)
i = Segment(C, B)
M = Midpoint(A, B)
j = OrthogonalLine(M, h)
m = Segment(M, C)
β = Angle(C, B, M)
γ = Angle(M, C, B)
δ_1 = Angle(A, C, M)
μ = Angle(B, M, C)
a = false
b = false
d = false
e = false
δ = Angle(C, M, A)
k = false
l = Segment(B, C)
p = CircleArc(M, B, C)
n = false
o = false
q = Segment(A, C)
r = CircleArc(M, C, A)
η = Angle(C, M, A)
θ = Angle(B, M, C)
Text1: "α=" + α_1 + "°"
α = Angle(B, A, C)