Parametric Equations and Cartesian Coordinates

This lecture covers the concept of parametric equations and Cartesian coordinates, explaining how to find equations of lines passing through given points and the distance between points. It also delves into homogeneous equations, normal vectors, and geometric angles between lines. The instructor demonstrates how to determine the Cartesian equation of a line and calculate the distance from a point to a line. Additionally, the lecture explores orthonormal coordinate systems and the geometric angle between two lines. The importance of landmarks and reference points in determining angles is highlighted.