Rugs at an angle

In the app, how to I indicate that a rectangular rug (carpet) or a piece of furniture is placed at an angle. The rotate icon when I am placing it on my map only rotates it 90°. I have a rug and coffee table that sit over hardwoods at an angle. I want it to mop on the floors but exclude mopping the rug.

The "No mop" zone can be angled, though. Simply position it and rotate it where you need it.

Can I pick up rugs after vacuum for the mopping and it will mop the whole room?