Find which lines are parallel

[jnoordzij]

Thank you @alvpickmans! I got it.

I’ve created a new topic for the next step of my goal: creating the shortest parallel lines between these parallel lines. If your interested, please have a look here:

Perpendicular line between two parallel lines

I have two parallel lines 1 & 2. I want to draw a shortest perpendicular line between the end point A of line 1, to a fictive point B which is not on line 2 but on its extension, so like on the ‘plane’ of line 2. I have no idea how to do this. Can you point me in the right direction? [20180223-14]