The plane x-y+z=0

W: x - y + z = 0
v: (-1 / 2, 0, 1 / 2)
w: (1 / 2, 1, 1 / 2)
list1 = Sequence((s * v) + Sequence[(t * w), t, 1, 5], s, 1, 5)
list2 = Sequence(Line[(((-s)) / 2, 0, s / 2), w], s, 1, 5)
list3 = Sequence(Line[(t / 2, t, t / 2), v], t, 1, 5)