[2, 1, 2] + r·[12, 4, 3] = [-2, 5, 1] + s·[6, 12, 4]
2 + 12·r = -2 + 6·s
1 + 4·r = 5 + 12·s
Das Gleichungssystem aus x und y-Koordinate gibt die Lösung: r = - 3/5 ∧ s = - 8/15
Bahn 1
[2, 1, 2] - 3/5·[12, 4, 3] = [- 26/5, - 7/5, 1/5]
Bahn 2
[-2, 5, 1] - 8/15·[6, 12, 4] = [- 26/5, - 7/5, - 17/15]