1. Tap the 
Thumbnails icon on the bottom navigation bar. If you don't see the navigation bar, tap the center of your screen to bring it up.
2. Long press on the page you want to rotate, or tap the Edit button, then tap any other page you want to rotate.
3. Tap the Rotate button. The selected pages are rotated clockwise.
4. Alternatively, tap the Overflow button from the Action Bar. Then tap Edit Pages.
5. Select Rotate.
6. Select rotation and page options, then tap OK.
