A_{1}: (2, -3, 1)
B_{1}: (3, -2, 3)
u = Vector(A_{1}, B_{1})
A_{2}: (0, -5, -3)
B_{2}: (5, 0, 7)
v = Vector(A_{2}, B_{2})
f = Line(A_{2}, B_{2})
g = Line(A_{1}, B_{1})
w = Vector(A_{1}, A_{2})
delta: abs(((u ⊗ v) * w)) / sqrt(((u ⊗ v) * (u ⊗ v)))