| 1 | 4 | ||||||||||||||||||||
| 3 | |||||||||||||||||||||
| 2 | |||||||||||||||||||||
1. A type of projector that allows users to interact with the projected content, often used in educational settings.
2. A setup designed for viewing films at home, often utilizing projectors for a cinematic experience.
3. The ratio of the distance from the projector to the screen relative to the width of the projected image.
4. A device that projects images or videos onto a surface, typically a screen.