This lecture introduces the fundamentals of descriptive geometry, focusing on the method of Monge for spatial representation. The instructor discusses the course objectives, emphasizing the importance of visualizing geometric objects in two dimensions while solving spatial problems. Key concepts include parallel projections, intersections, and the use of software like GeoGebra for defining and manipulating geometric shapes. The lecture outlines the course structure, including weekly sessions and exercises, and highlights the significance of mastering the foundational techniques early in the semester. The instructor encourages students to engage with the material actively, utilizing provided resources and participating in discussions. The importance of precision in drawing and understanding geometric relationships is stressed, as well as the necessity of practicing with traditional tools alongside digital software. Overall, the lecture sets the stage for a comprehensive exploration of geometric principles and their applications in various contexts.