Removing a polygon which has no net?

[raghu]

i m facing a problem while Removing a polygon which has no net, how can i delete it?!
It is not selecting at all, how to select it?!( i m selecting bottom side poly in bottom layer only, but it is not getting selecting).
is there any way to give net to it?

[mairomaster]

At least with Altium 17 (don't remember how it was with previous versions) you have to be on the particular layer where the polygon is, to be able to select it. Other than that you can always use the PCB panel and chose the Polygons category from the drop down menu or go to Tools - Polygon Pours - Polygon manager.