U1_ecp_05

P1: x + (sqrt(6) * y) + z + 2 = 0
P3: x - (sqrt(6) * y) + z + 2 = 0
P = Point({-1, 1, -4})
N2 = Point({2, 2, -2})
n2 = Vector(N2)
N1 = Point({1, sqrt(6), 1})
N3 = Point({1, (-sqrt(6)), 1})
n1 = Vector(N1)
n3 = Vector(N3)
P2 = OrthogonalPlane(P, n2)
A1 = Angle(n1, n2)
A2 = Angle(n2, n3)