Allow users to rotate the selected elements or a complete piece by freehand or entering values.
Select the element(s);
Select
tool;
Click the fixed point (pivot point);
Click the second reference point without releasing the mouse button, a reference dash guideline going from the first point to the second point appears. Those two lines represent an angle;
Pivot the guideline to the desired rotation angle.
Select the element(s) or complete piece;
Select
tool;
Hold down Alt (Windows) or Option (Macintosh) or Alt+Windows (Linux) key;
Click the pivot point, enter values in the dialog box. Click [OK] button.
Note
Enter a positive angle for counter-clockwise rotation and a negative angle for clockwise one.