Warm Up 9-21 Which angles are vertical angles? Announcements Quiz Thursday Parallel Lines Coplanar lines that do not intersect Constructing Parallel Lines http://www.mathopenref.com/constparall el.html Get out a compass, pencil and your spiral notebook. Follow along with the video and construct parallel lines in your notebook Parallel Lines Now we are going to construct parallel lines together. After we finish: Complete HW: Parallel lines worksheet Construct 3 sets of parallel lines