The right-hand end of the Tool bar contains the Quick Preferences. These are Vectorworks and…
Vectorworks Tip #146 – Document Preferences – Mesh Smoothing
Some of your 3D models will look like a series of triangles making a mesh. This occurs with imported objects like cars and it will also occur on site models. the answer is to use Mesh Smoothing, one of the Document Preferences. It will dramatically smooth out the 3D model.