Rotating by Reference in AutoCAD

Sometimes it’s easier to rotate with absolute angles. For example, to align two objects when you know the absolute angles of both, use the current angle of the object to be rotated as the reference angle, and use the angle of the other object as the new angle. An easier way is to use the pointing device to select the object that you want to rotate and the object you want to align it with.

In the following example, you specify the reference angle by selecting two points on the object to rotate. The Intersection and Endpoint object snaps help you to select precise points on this object. You then specify the new angle by selecting the object you want to align with.

rotating-reference

To rotate by reference

  1. From the Modify menu, choose Rotate.
  2. Select the object to rotate (1).
  3. Select the object again to specify the base point for the rotation.
  4. Enter r (Reference). Now define the reference and new angles by selecting the objects you’re aligning.
  5. Enter int (Intersection object snap), and select the intersection point (2) to begin defining the reference angle.
  6. Enter endp (Endpoint object snap), and select the endpoint of the object you are rotating (3) to complete definition of the reference angle.
  7. Enter endp again, and select the endpoint of the object to align with (4).

Command line ROTATE
Shortcut menu Select the objects to rotate, right-click in the drawing area, and choose Rotate.

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