SketchUp is a 3D modeling application similar to Photoshop or AutoCAD. Unlike these programs, however, SketchUp does not have a grid feature to guide you while you are drawing your models. Instead, ...

A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...