g: X = [6, 2, 1] + r·[2, 1, 6]
h: X = [6, - 1, 4] + s·[5, 5, 6]
E: X = [6, 2, 1] + r·[2, 1, 6] + s·[5, 5, 6]
k·N = [2, 1, 6] ⨯ [5, 5, 6] = [- 24, 18, 5] = - [24, - 18, - 5]
E: 24·x - 18·y - 5·z = 103
d = |24·(6) - 18·(- 1) - 5·(4) - 103| / √(24^2 + 18^2 + 5^2) = 39/185·√37 = 1.282 LE