Abstract
Computer Aided Design (CAD) and Geographical Information System (GIS) have been used extensively for a wide range of applications in recent decades. It is used to create more realistic images that represent different physical objects than were possible before. In the construction and processing of models, their information must be sufficient, complete and have no contradiction. Some problems frequently arise during CAD and GIS applications and many of these problems can be naturally set in geometric representation. Solving these problems helps in many CAD and GIS applications. This paper focuses on one of these problems; (3D – Containment). A new algorithm has been designed to solve this problem. The results obtained showed a better performance than other algorithms that treat the same problem.