 \vec{ i } 

 \vec{ j } 

Garder la trace de P

Effacer la trace en bougeant ce curseur

Déplacer le point M

O = (0, 0)
i = (1, 0)
j = (0, 1)
c = Circle(O, 2.0)
A = (0, -2)
M = Point(c)
a = OrthogonalLine(M, xAxis)
H = Intersect(a, xAxis)
b = Line(O, M)
d = Line(A, H)
P = Intersect(b, d)
B: P
e = false
f = 1.4 (slider from 0 to 5, step 0.1)
g = Segment(M, H)