A 3D model is a digital representation of an object or scene in three dimensions. Unlike a flat image, a 3D model has depth, width, and height, allowing it to be viewed from different angles. These models are created using specialized software and can represent anything from simple shapes to complex characters and environments. 3D models are widely used in various fields, including video games, animation, and architecture. They help designers visualize their ideas and create realistic simulations. Additionally, 3D models can be printed using 3D printing technology, allowing for the physical creation of digital designs.