Lecture
This lecture covers the introduction and definitions related to perspective in descriptive geometry. It explains the representation of shadows, projections, and the essential role of the observer's position. The lecture delves into methods like axonometry and Honge's method, emphasizing the concept of parallel and orthogonal projections. It also discusses the construction of images using radial methods and the importance of the principal point in orthogonal projections. The instructor demonstrates how to project objects onto a plane and the significance of the observer's eye as the center of projection. Various techniques, such as central projection and perspective, are explored to achieve a representation closer to human vision.