A1 = (0, 0, 0)
B = (1, 1, -3)
C = (-1, 1, -1)
A = (2, -2, 2)
v = Vector(A1, C)
w = Vector(A1, A)
u = Vector(A1, B)
Ty = Sequence(Segment[(0, t, (-0.1)), (0, t, 0.1)], t, 1, 6)
Tx = Sequence(Segment[(t, 0, (-0.1)), (t, 0, 0.1)], t, 1, 6)
Tz = Sequence(Segment[(0, (-0.1), t), (0, 0.1, t)], t, 1, 6)
e3 = Vector((0, 0, 0), (0, 0, 7))
e1 = Vector(A1, (7, 0, 0))
e2 = Vector((0, -2, 0), (0, 7, 0))
c_1 = 0
c_2 = 0
c_3 = 0
c_4 = 0
c_5 = 0
c_6 = 0
E = Plane(A, B, C)
c_7 = 0
N = (1, 2, 1)
n = Vector(A1, N)