Embedding a 3D model in a PDF can enhance the visualization and interactivity of your document, making it more engaging for your audience. Here's how you can do it:

1. Choose the Right Tool: Adobe Acrobat Pro DC supports the embedding of 3D models in PDF documents. Ensure that you have the latest version of Adobe Acrobat Pro DC installed on your computer.

2. Convert the 3D Model: The 3D model that you want to embed in the PDF must be in a supported format, such as U3D or PRC. If your 3D model is not in the correct format, you can use software like Autodesk Fusion 360 or Blender to convert it.

3. Embed the 3D Model: Open your PDF document in Adobe Acrobat Pro DC and navigate to the location where you want to embed the 3D model. Go to 'Tools' > 'Rich Media' > '3D' and select 'Add 3D'. Choose the 3D model file from your computer and click 'Select'.

4. Set 3D Model Properties: Once the 3D model is added to the PDF, you can adjust its properties to customize its appearance and behavior. You can specify the initial view, lighting, and default settings for the 3D model.

5. Test the Embedded 3D Model: After embedding the 3D model, it's important to test it within the PDF to ensure that it appears and functions as intended. You can interact with the 3D model by rotating, panning, and zooming to verify its interactivity.

6. Save and Share the PDF: Once you are satisfied with the embedded 3D model, save the PDF document in Adobe Acrobat Pro DC. You can then share the PDF with others, and they will be able to view and interact with the 3D model using Adobe Acrobat Reader or a compatible PDF viewer.

By following these steps, you can effectively embed a 3D model in a PDF document, adding depth and engagement to your visual content. Whether you're creating technical manuals, product presentations, or educational materials, the incorporation of 3D models can elevate the quality and impact of your PDFs.