Intersection of Line and Plane: Geometric Descriptive

This lecture covers the determination of the point of intersection between a line and a plane using an auxiliary plane. It explains the concept of coplanar lines, the use of projectants, and the visibility of objects in different projections. The instructor demonstrates how to determine the visibility of a straight-plate in different projections and how to identify parallel lines to a plane. Examples are provided to illustrate the construction process and the relationship between lines and planes.