Question
Determine whether the lines:
and 
Solution
The given lines are
...(1)
and
...(2)
∴ lines {1) and (2) are not coplanar
∴ lines (1) and (2) do not intersect.
...(1)and
...(2)∴ lines {1) and (2) are not coplanar
∴ lines (1) and (2) do not intersect.
