how to join 2 object ?

 From:  Frenchy Pilou (PILOU)
8424.17 
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!

EDITED: 16 May 2017 by PILOU