Correct PowerPoint Aspect Ratio: 4:3 or 16:9

Correct PowerPoint Aspect Ratio: 4:3 or 16:9

Last week, I checked in at a nice hotel. Close to the reception desk, there was a big television screen mounted to the wall. It played an hotel promotion video showing the rooms, facilities, restaurants etc. A wide-screen or typical 16:9 movie on a typical television...