This lecture covers the fundamentals of Geometric Descriptive, focusing on the representation of shadows and perspective in two and three dimensions. Topics include the use of GeoGebra software, Monge's representation techniques, axonometry, and perspective. Students will learn about points, lines, planes, intersections, parallelism, perpendicularity, shadows, and projections of circles. The course also delves into spheres, cones, cylinders, and their tangent planes, sections, and applications in shadow problems. Practical exercises and software tools will be used to enhance understanding.