M = Intersect(xAxis, yAxis)
P = Point(yAxis)
c = Circle(M, P)
A = Point(c)
B = Point(c)
a = Segment(A, B)
C = Point(c)
b = Segment(A, C)
d = Segment(B, C)
e = Segment(A, M)
f = Segment(B, M)
α = Angle(A, M, B)
β = Angle(A, C, B)
Text1: "2 \cdot \beta = 2 \cdot " + β + " = " + (2.0 * β)