ROTATE command.

The ROTATE command is used to rotate selected object around the specified base point.

Command Access:

Ribbon : Home > Modify > Rotate
Menu : Modify > Rotate
Command : ROTATE
Shortcut : select object and right-click, and then click "Rotate"

Command Prompts:

UCS current positive angle: ANGDIR=counter clockwise ANGBASE=0
Select object:
Specify the base point:
Specify rotation angle or [Copy/Reference] <0>:

Relative Glossary:

Rotation angle:
Specify the rotation angle.
The rotation axis goes across the specified base point and is parallel to Z axis of current UCS.

Copy:
Create a copy of selected object.
Reference:
Specify a reference angle, the selected object rotated to a new absolute angle referencing to the specified reference angle

Rotating selected objects, the frame of viewport is parallel to the boundary of drawing area.

Related tutorial video:

• Status bar related setting 00:15
• Draw Rectangles and Polygons 00:26
• Rectang command 00:26
• Polygon command 00:26
• Arc command 00:30
• Trim command 00:40
• Extend command 01:51
• Offset command 02:23
• Stretch command 03:35
• Edit objects + grips 03:55
• Break object 04:13
• Circle command 05:51
• Draw circles 05:51
• Break command 05:56
• Join command 06:32
• Scale command 06:53
• Lengthen command 07:29
• Copy command 08:20
• Rotate command 08:47
• Move command 09:07

Above video sources from TUTORIAL - GETTING STARTED WITH GSTARCAD, enrol now for free.