This file is Lessons 0 and 1 of the first half of our Integrated Mathematics 3 Advanced: Coordinate Geometry unit. Lesson 0: Review Slopes and Equations of LinesLesson 1: Parallel and Perpendicular LinesLesson 2: Distance and Midpoints with Triangle ClassificationLesson 3: Coordinate ProofsLesson 4: Right Triangle Trigonometry in Cartesian PlaneThe unit is designed for advanced students who need to apply basic ideas like slope, midpoints, distance, equations of lines, and right triangle trigonom