About a Center
To rotate a drawing or drawing element about a center:
1. Click Rotate in Modify.
2. Click Center in Rotate.
3. Specify the center of rotation.
4. Enter the angle of rotation. Alternatively, you can define the angle by specifying two points. A positive angle results in a counterclockwise rotation.
5. Select the element(s) to be rotated.
The Center option is especially useful when combined with a Repeat factor for repeated rotation. The flywheel shown in following figure was drawn by rotating the holes with a repeat factor of 5.
Flywheel
