Polygonal objects are objects build out of multiple polygons. Examples of polygonal objects in 3D are convex and non-convex polyhedra and other various one- or two-sided shapes in 3D. In many cases modeling polygonal objects in 3D requires special algorithms, for example algorithms to calculate vertices and create polygons out of these vertices, algorithms to build a convex hull in case of convex objects, etc. Some of these tasks are very time consuming, especially while dealing with objects built out of hundreds of polygons. Therefore, algorithms to perform these tasks should be highly efficient.