A = (2, 1)
B = (3, 4)
u = Vector(A, B)
a = Line(A, B)
M = Point(a)
t = AffineRatio(A, B, M)
a' = Line(A, B)
text3: "" + (Name[a]) + ": " + (LaTeX[a']) + ""
text2: "" + (Name[a]) + ": " + (LaTeX[a]) + ""
text1: "" + (Name[M]) + " = " + (Name[A]) + " + " + (Name[t]) + "·" + (Name[u]) + " = " + (LaTeX[A]) + " + " + (LaTeX[t]) + "·" + u + " = " + M + ""
n = OrthogonalVector(a)