Rotate and modify shapes added to a PDF in Preview on Mac
You can add a shape to a PDF or to an image using the Shapes tool in the Markup toolbar, and then rotate the shape or change its sides or angles.
In the Preview app on your Mac, open the PDF you want to change.
Do any of the following:
Rotate a shape: Select the shape and place the pointer over it, place your thumb and a finger on the trackpad, then pivot them around each other as if you’re turning a jar lid. Shift-click to select multiple shapes and rotate them together.
Change a shape’s sides and angles: For some shapes (stars and hexagons, for example), you can change the number of sides and angles. Select the shape, then drag one of the green handles.
To learn how to rotate or resize an entire image, see Resize, rotate, or flip an image. To learn how to rotate a PDF, see Crop or rotate a PDF.