Ha 2016

a = 2 (slider from -5 to 5, step 1)
b = 1 (slider from -5 to 5, step 1)
Q = Point(xAxis)
c = Circle(Q, a + b)
d = Circle(Q, b)
B', B = Intersect(c, yAxis)
e = Segment(B, Q)
P_1, D = Intersect(d, e)
Ortslinie1 = Locus(P_1, Q)
f = Segment(Q, B')
E, P'_1 = Intersect(d, f)
Ortslinie2 = Locus(P'_1, Q)
O: (0, 0)
g = OrthogonalLine(O, e)
P = Intersect(g, e)
Ortslinie3 = Locus(P_1, Q)
h = OrthogonalLine(O, f)
P' = Intersect(h, f)
Ortslinie4 = Locus(P, Q)
Ortslinie5 = Locus(P', Q)
i = Segment(B, Q)
j = Segment(Q, B')
k = Segment(P, O)
l = Segment(O, P')
m = Line(B, B')
n = Line(Q, O)
α = Angle(O, P, Q)
p = Circle(O, 3)
q = Circle(O, 1.5)