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tramber
en respuesta a: sascari

Look :

if you want to draw a bicycle chain between 2 circles.

You gonna ask for a line, staight on, you gonna ask for a TAN obj snap, just before a first click.

Then you gonna click on a side of the circle 1 and ask (again, by a CTRL+right-click, for instance) another TANgeant snaping on the right side of the circle 2.

 

You see !?

It is what we call a Temporary objectsnaping.

 

Perpendicular is another exemple of a temporariable snaping !

 

It helps to understand this very particular application you are asking about in the Circle Command.

 

You can do all those things on so many kind of objects, that it is not a discusssion.

 

PS : I know many people who pretend they know Acad perfectly who never knew more than 50 % of object snaping real functionnality...

Temporariing may be fantastic and depends on where to apply, ... before to apply !