Parallel and Perpendicular Lines

This OER is from Open Algebra. It has good graphics and videos explaining slope and if two lines are parallel and perpendicular. It shows the work when writing in slope-intercept form and gives steps.

This website is for students to find the relationship between parallel and perpendicular lines. The website gives an introduction, materials needed, time needed and resources. The lesson encourages discussions.

This video explains if lines are parallel or perpendicular by finding the slopes of lines passing through certain points. There is practice for the student after the video.

This video looks a 3-D object instead of a coordinate plane and defines vocabulary words.

I like how this video explains how to find the equation of a line that is perpendicular to a certain line and goes through a certain point.

This video explains how to write an equation of a line in Point-Slope Form instead of slope-intercept form. It has good graphics.

"This project introduces students to parallel lines and angles through videos, practice exercises, simulations, hands-on activities, and student presentations." The simulations were great. This will be a good project for students.

"You'll practice finding the missing angles using the properties of parallel lines." This is a fun activity for students. It will keep them engaged.

"Are you a student looking to study mathematics on your own, and want to do exercises with immediate feedback as you work through a free and open textbook? Then read more about our self study courses." This is an interactive website. It is fun to play.

In this video you will learn about parallel lines, transversals, and the angles they form.