R = 3 (slider from 0 to 5, step 1)
A = (0.92, 1.4825)
c = Circle(A, R)
B = Point(c)
a = Segment(A, B)
b = LineBisector(A, B)
C, D = Intersect(c, b)
d = Segment(A, D)
e = Segment(B, D)