Use the Rotate command to rotate entities through an angle, about a base point.
To rotate entities:
The pivot point is the point about which rotation occurs, typically a corner or a center of an entity. If the base point is the corner of a specified entity, the entities rotate on that corner. If the base point is the center of a specified entity, the entity stays in the same relative position, but spins about the base point.
The specified entities rotate as specified. By default, rotation is counterclockwise.
When you rotate, set the Ortho mode to constrain the angle of rotation to 90° intervals.
When you rotate, set the Ortho mode to constrain the angle of rotation to 90° intervals.
Access
Command: Rotate
Menu: Modify > Rotate
Ribbon: Home > Modify > Rotate
Toolbar: Rotate
Context Menu: Specify entities, right-click in the graphics area, and click Rotate.