A = (0, 0)
B = Point(xAxis)
u = Vector(A, B)
C = Point(xAxis)
v = Vector(A, C)
a: x(B)
b: x(C)
c: (a * b)
D: (c, 0)
w = Vector(A, D)
texto1: "a=" + (LaTeX[a]) + ""
texto2: "b=" + (LaTeX[b]) + ""
texto3: "" + (LaTeX[a]) + "×" + (LaTeX[b]) + "=" + (LaTeX[c]) + ""