Déplacer le point M à l'intérieur du parallélogramme ABCD

A = Point(xAxis)
B = Point(xAxis)
C = (17.248939449304327, 9.140614689878573)
D: A + Vector[B, C]
M = (6.350905564926302, 6.9105150919170475)
a = Segment(D, A)
b = Segment(B, A)
c = Segment(B, C)
d = Segment(D, C)
e = Line(M, a)
f = Line(M, b)
E = Intersect(f, a)
F = Intersect(d, e)
G = Intersect(f, c)
H = Intersect(b, e)
g = Segment(F, H)
h = Segment(E, G)
i = Line(E, F)
j = Line(A, C)
k = Line(H, G)
M': M
m = Slope(i)
m' = Slope(k)