You have also an another strategy more easy! :)
No Rotation - only Copy Move!
From your last file

Use the Transform / Orient /Line Line / Scaling None

Sorry there is a little gap here because i didn't made a Mouse Whell Zoom for the last Click Point!



If a Zoom was made for close up the Click "Hot Point" fit is perfect!

Hi Pilou - Orient line to line will only work for this with certain kinds of rotations. I would recommend using orient line to line for manipulating 2D shapes on a plane, not for 3D orientations, that's what the other Orient command is for.

I've attached an example here where you can see orient line to line won't work well.

- Michael

I was unlucky to fall on an example who were working fine! :)

I am not yet only sure that i can't Line-line + helper lines to find a solution in any case! :)

merci pilou aussi

Hi Michael,
I am unable to view your last 3 videos.
After the colon (:), there is a large blank area

- Brian

Hi Brian, what web browser are you using?

- Michael

I've been using IE 11, but have dabbled in Chrome.
On chrome the videos show up. So it must be time to switch to Chrome:-)
Thank you Michael
- Brian

Or Firefox! ;)