I want to move the ellipse, or a curved spline to be tangent to the straight line, in this case. Is there a way?If i drew the shortest vertical line between them...How do i insert here an image? i took this line from Excel hyperlink but it doesn't workI use 2006 and 2013

I guess we'll just have to use our imaginations.

You may try the MoveTill utility (iterative). For images, use the full Reply with image upload.

Where do i get this utility (MoveTill)?What do you mean by "use full reply with images upload"? what do i have to do, in Autocad or where?

You can download it here in the Download section - see also: http://lmgtfy.com/?q=movetill+autocadThe images (in forum) can be inserted throught the Full Reply icon.