E: X = [-1, 1, 2] + r * [-1, 3, 1] + s * [2, 5, 1]
N = [-1, 3, 1] ⨯ [2, 5, 1] = [-2, 3, -11] = - [2, -3, 11]
E: 2·x - 3·y + 11·z = 17
d = (2·x - 3·y + 11·z - 17) / √(2^2 + 3^2 + 11^2)
d = (2·(3) - 3·(1) + 11·(4) - 17) / √(2^2 + 3^2 + 11^2) = 2.591605276