Creating widescreen slides in PowerPoint 2013 adds a modern, balanced feel to your presentation. PowerPoint provides all templates in the traditional 4:3 aspect ratio or the widescreen 16:9 ratio. Although the software defaults its templates to the widescreen setting, they might be appearing in 4:3 aspect ratio if you changed a setting under the “Design” tab somewhere along the line. However, it’s also possible the problem lies in the TV’s aspect ratio settings.
