R - Commands  
ROTATE (command)
   Overview   Operations  Commands 

It rotates objects around a base point

 Modify toolbar 

 Command line ROTATE

Select the objects to be rotated, then press Enter to confirm or Esc to delete.... Use an object selection method and press ENTER at the end of the operation.

Specify rotation center: Specify a point

Specify rotation angle or [Copy /Reference /Point ]: Enter an angle, specify a point, enter  C or enter  R or enter  P

 

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