O = Point(xAxis)
M = (3, 3)
a = OrthogonalLine(M, yAxis)
b = OrthogonalLine(M, xAxis)
K = Intersect(a, yAxis)
H = Intersect(b, xAxis)
c = Segment(M, K)
d = Segment(M, H)
u = Vector(O, M)