2. Draw the picture and answer the questions

3. Objectives: Students will analyze and identify angle pairs formed by three intersecting lines. Why? So you can classify lines in a real world situation. Mastery is 80% or better on 5-minute checks.

4. p m  n Like train tracks Like layers of a cake Like a highway overpass Like a street crossing train tracks

5. Skill Develop Identifying Relationships in Space TThink of each segment in the diagram. Which appear to fit the description? a.Parallel to AB and contains D b.Perpendicular to AB and contains D c.Skew to AB and contains D d.Name the plane(s) that contains D and appear to be parallel to plane ABE A B D C F E H G

6. Guided-Pair Share G H

7. Let’s see how you did… G H

8. Skill Develop Postulate 13: Parallel Postulate If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line. P l This is a symbol for lines being parallel This is another symbol for lines being parallel

9. Skill Develop Postulate 14: Perpendicular Postulate If there is a line and a point not on the line, then there is exactly one line through the given point perpendicular to the given line. l P

10. More Vocabulary The following definitions deal with different angle relationships formed by intersecting lines corresponding alternate interior alternate exterior consecutive interior Also referred to as same side interior or SSI angles All of these relationships refer to position of the angles and have nothing to do with their measure

11. Guided Identifying Angle relationships List all pairs of angles that fit the description. a.Corresponding b.Alternate exterior c.Consecutive interior d.Alternate interior 3 7 2 6 1 5 4 8 1 5 2 6 4 8 3 7 There are 4 sets There are 2 sets 1 8 2 7 6 4 5 3

12. Pair Share: List all angle relationships below.

13. Performance Task There are 4 sets There are 2 sets

14. What was our objective today???

15. HomeWork Pages 150-151 # 1-33 all