1. ©Evergreen Public Schools 2011 1 1/25/2011 Parallel & Perpendicular Lines Equipment Needed: Straightedges/Rulers, Protractors, and Patty Paper (or Parchment paper cut into 4” squares) Vocabulary parallel perpendicular

2. ©Evergreen Public Schools 2011 2 Learning Target I can apply properties about parallel and perpendicular lines, and the angles formed by parallel lines. What do you know about parallel or perpendicular lines?

3. ©Evergreen Public Schools 2011 3 Just So You Know… Construction – To use geometry tools (protractor, straight edge, compass, pencil) to create a figure on paper. Draw/Sketch – To roughly approximate a geometric figure on paper. Straight edge – something used to draw a line.

4. ©Evergreen Public Schools 2011 4 Launch – Describe & Defend intersecting lines parallel lines intersecting lines perpendicular lines

5. ©Evergreen Public Schools 2011 5 ExploreExplore

6. 6 Let’s take a look… Parallel Lines Applet Parallel Lines are… Parallel Lines

7. ©Evergreen Public Schools 2011 7 Let’s take a look… Perpendicular Lines Applet Perependicular Lines are… Perpendicular Lines

8. ©Evergreen Public Schools 2011 8 Draw 2 parallel lines. Add a 3 rd parallel line. Fold 2 parallel lines. Add a 3 rd parallel line. Draw 2 perpendicular lines. Add a 3 rd perpendicular line. Fold 2 perpendicular lines. Add a 3 rd perpendicular line. You may use a ruler. You cannot use lined paper.

9. ©Evergreen Public Schools 2011 9 Examine all four tasks. Make a list of possible conjectures you think could be true about parallel and perpendicular lines. Each group will have to share at least one possible conjecture with the class. So make a long list.

10. ©Evergreen Public Schools 2011 10 Team Practice Use what you learned from the last task to complete the table.

11. ©Evergreen Public Schools 2011 11 On your Unit Organizer Complete the “parallel lines” box on page 6. Complete the bottom half of page 10.

12. ©Evergreen Public Schools 2011 12 5 3 1 2 4 Learning Target Did you hit the target? I can apply properties about parallel and perpendicular lines, and the angles formed by parallel lines. Rate your understanding of the target from 1 to 5.

13. ©Evergreen Public Schools 2011 13 Practice Practice 6.4a