In this unit, we review properties of parallel and perpendicular lines, learn what it takes to prove that lines actually are parallel or perpendicular and review slopes of such lines in the coordinate plane.
Click on the links below for videos for extra help! Mrs. Gray's Geometry Videos are also available.
3.1 - Lines and Angles
3.2 - Properties of Parallel Lines, Using Algebra to Find Angle Measures
3.3 - Proving Lines Parallel
3.4 - Parallel and Perpendicular Lines
3.6 - Constructing Parallel and Perpendicular Lines
3.7 - Equations of Lines in the Coordinate Plane (Point Slope Form, Slope Intercept Form, Standard Form)