To view 3D models in AutoCAD, you can use several methods to effectively navigate and analyze your designs. Firstly, you can use the 3D Orbit tool, which allows you to rotate and visualize your 3D models from different perspectives. You can activate the 3D Orbit tool by clicking on the View tab and selecting 3D Orbit from the Navigation panel. Once activated, you can click and drag the mouse to rotate your model in any direction, providing a comprehensive view of your design. Another method to view 3D models in AutoCAD is using the ViewCube. This tool provides a simple and intuitive way to orient your 3D models by clicking and dragging the cube faces to rotate and swivel your model. The ViewCube can be accessed by clicking on the View tab and selecting ViewCube from the Appearance panel. Additionally, you can utilize the Visual Styles to enhance the display of your 3D models. The Visual Styles options, such as Wireframe, Conceptual, Realistic, and others, allow you to adjust the appearance of your models to suit your design needs. You can access these options by clicking on the Visual Styles dropdown menu in the Visualize panel on the View tab. Furthermore, you can use the 3D Pan tool to move your model in the 3D space. To activate the 3D Pan tool, click on the View tab and select 3D Pan from the Navigation panel. This tool allows you to pan and move your model in the X, Y, and Z axes, providing flexibility in navigating your 3D designs. Lastly, AutoCAD also offers the Walk and Fly tools, which enable you to explore your 3D models as if you were walking or flying through the design space. These tools can be accessed by clicking on the View tab and selecting Walk or Fly from the Navigate panel. By mastering these methods and tools, you can efficiently view and analyze your 3D models in AutoCAD, enhancing your design workflow and productivity.