how would i rotate an angle Torus Hi how would i  go by rotate an angle Torus at 45* to revolve around the origin like in gif 1 and not like gif2 ? I would like to do something simulator to this video  thank for your help
You can limit the movement by locking other axes for rotation. Open the numeric panel (N, or click on the + sign on the top right of the 3D viewport.

Then lock the rotation for the X and Y axes.

Your object can then rotate on Z axis only.

An alternative without locking the axis is pressing RZ on the keyboard, the rotation movement will be restricted to the Z axis.