You don’t have the same abilities on the mobile app, so you have to do this on your Windows or Mac computer. [1] X Research source
If you’re more familiar with centimeters instead, the measurements should be “14. 29 x 25. 4” centimeters. If you think people will want to print your slides in portrait orientation, make the slides “7. 5 x 10” inches/“19. 05 x 25. 4” centimeters instead.
If you switch the orientation on an existing presentation, you may need to go through all the slides and make sure the content on each didn’t crop awkwardly. [2] X Research source
