You can rotate an existing sketch. Note that the rotation angle you specify is not absolute, but relative to the present position of the sketch.
To rotate a sketch,
1. Click Insert and then, in the Sketch group, click Properties.
2. Select the sketch in the viewport or double-click the sketch in the Drawing Browser.
The Sketch Properties dialog box opens.
Alternatively, select the sketch in the viewport, right-click, and select Sketch Properties from the context menu. Set the preselection focus on the Status Bar to Sketch or All to preselect the sketch. You can also select double-click the sketch in the Drawing Browser and click on the Command Mini Toolbar.
3. Under Rotation Angle, specify the absolute or relative angle of rotation. (A positive angle rotates the sketch in the counterclockwise direction.)
Properties.