Hello

here I am  struggling with some quite simple but something which is making crazy.

I have imported some drawings in dwg format from vectorwork so that I can use as guide lines to build my model.

I am trying to rotate a 2d drawn object around a circular path and a vertical axe, quite easy thing to do. The only problem is that Rhino won t let me snap the corner object I am gonna rotate to the mid point of the circle so that I can have  aprecise path. I can try to overwrite the snap but the result is not very precise. Ihave been trhought the snapping menu over and over, I have also redrawn everything but still nothing.

Can anyone help me out?

Thank guys