Stangenkonstruktion der Ellipse

Ha 08

mit der Astroide

b = 3
a = 4
Q = Point(xAxis)
L: a + b
c = Circle(Q, L)
H, C = Intersect(c, yAxis)
d = Segment(H, Q)
e = Circle(H, a)
P = Intersect(e, d)
P' = Mirror(P, xAxis)
H' = Mirror(H, xAxis)
Q' = Mirror(Q, xAxis)
f = Segment(H', Q')