\overset{\LARGE{\frown}}{AB}

\overset{\LARGE{\frown}}{BA}

AB

φ

BA

r

r

Zentriwinkel α

Zentriwinkel β

M = (-8, 2)
r_1 = 7.8 (slider from 0 to 10)
c = Circle(M, r_1)
A = Point(c)
B = Point(c)
d = CircleArc(M, A, B)
e = CircleArc(M, B, A)
C = Point(d)
D = Point(e)
P_2 = Point(d)
φ = Angle(B, P_2, A)
f = Segment(A, P_2)
g = Segment(P_2, B)
a = true
P_1 = Point(e)
h = Segment(A, P_1)
i = Segment(P_1, B)
ω = Angle(A, P_1, B)
b = false
k = false
l = Segment(A, M)
m = Segment(M, B)
α = Angle(A, M, B)
n = true
p = Segment(A, M)
q = Segment(M, B)
β = Angle(B, M, A)
o = false
r = Segment(M, P_1)
t = Segment(A, B)
ω_1 = Angle(A, P_1, M)
ω_2 = Angle(M, P_1, B)
δ_2 = Angle(B, A, M)
δ_1 = Angle(M, A, P_1)
φ_2 = Angle(P_1, B, M)
φ_1 = Angle(M, B, A)