Photorealistic CAD-based interactive models demonstrate which type of model?

Photorealistic CAD-based interactive models are classified as virtual models because they exist in a digital environment, allowing users to manipulate and interact with them in real-time. These models leverage computer-aided design (CAD) software to create highly detailed and realistic representations of objects or systems, which can be explored from various angles and perspectives.

The interactivity aspect of virtual models enables designers to simulate real-world interactions and behaviors, making them extremely valuable in design evaluation and communication. This characteristic is essential for iterative design processes, as changes can be made quickly and visualized immediately without the need for physical alterations.

While conceptual models provide abstract ideas and physical models represent tangible objects, and graphical models may include visual representations such as sketches or diagrams, only virtual models incorporate the immersive, interactive nature that modern CAD technology offers.