**10. Conclusions**

The software StereoMV proposed in this chapter can be used in teaching stereometry. It will be able to help develop spatial thinking in students who do not have it. VR systems are tracked, both with and without immersion. The stereo system can work with any VR device thanks to its Java3D library. The use of virtual and augmented reality in teaching mathematics, and in particular stereometry, is not new. There are documented results of the benefits of 3D technology in mathematics education. The conclusion is that VR helps students discover and track mathematical dependencies. At the same time, teachers are also open to this kind of training. The system's main advantage is that for the generation of 3D objects, a new author's boundary method is used with high accuracy compared to the traditional one which is using trigonometry. With this method, extruding the 2D polygons into 3D objects is unnecessary. This chapter uses the technique to generate a square (a polygon with four vertices). But the same rules can be applied to any regular polygon. The number of vertices can grow indefinitely. The chapter also presents modern educational approaches to teaching stereometry through the new author system.
