過圓上一點的弦中點軌跡
Author: 詩琦

圓心 = (0.98, 2.6)
p = (3, 1)
c = Circle(圓心, p)
定點B = (4.66, 4.9)
D = Point(c)
a = Segment(定點B, D)
E = Midpoint(a)
F = Point(c)
b = Segment(F, 定點B)
G = Midpoint(F, 定點B)
H = Point(c)
d = Segment(H, 定點B)
I = Midpoint(H, 定點B)
J = Point(c)
e = Segment(J, 定點B)
K = Midpoint(J, 定點B)
L = Point(c)
f = Segment(L, 定點B)
M = Midpoint(L, 定點B)
N = Point(c)
g = Segment(N, 定點B)
O = Midpoint(N, 定點B)
P = Point(c)
h = Segment(P, 定點B)
Q = Midpoint(P, 定點B)
R = Point(c)
i = Segment(R, 定點B)
S = Midpoint(R, 定點B)
loc1 = Locus(E, D)