If you want to flip the file a full 180 degrees, simply follow the same steps again. Your PDF will rotate 90 degrees in the direction you choose. Select Clockwise or Counterclockwise rotation.
If you have a PDF reader like Adobe Acrobat downloaded to your Windows 10 device, rotating PDFs is simple: Not happy with the orientation of a file? Learn how to rotate PDFs on Windows 10 using either a PDF reader or an online app.