This lecture covers the concept of guiding vectors in analytical geometry, focusing on the relationship between internal displacements and guiding vectors, as well as the definition of directors in different spaces. It explains how to determine guiding vectors for lines, planes, and spaces, emphasizing the importance of non-collinear and non-coplanar vectors. The lecture also discusses the establishment of a coordinate system and the role of the origin in defining vectors. Furthermore, it explores the bijection between different spaces and the impact of changing coordinate systems on point coordinates. The presentation concludes with a detailed explanation of geometric digital spaces and the modifications that occur when transitioning between reference frames.