1. Chapter 3Section 3.3 Proving Lines Are Parallel 9/21/2010 1 Clark - Ch 3.4

3. Corresponding Angle Converse

4. Alternate Interior angles are , then the lines are parallel

5. Alternate Interior Angle Converse.

6. Alternate Exterior angles are  , then the lines are parallel

7. Alternate Exterior Angle Converse

8. Same Side Interior angles are supplementary , then the lines are parallel

9. Same SideInterior Angle Converse9/21/2010 2 Clark - Ch 3.4

11. 1 and 56 are supplementary

13. Corresponding Angle Converse9/21/2010 3 Clark - Ch 3.4

15. 1 and 79 are congruent

16. Alt. Int. Angle Converse9/21/2010 4 Clark - Ch 3.4

19. 4x + 24 = 180

20. 4x = 156

21. x = 395

23. 60 = 3x

24. 20 = x9/21/2010 6 Clark - Ch 3.4

25. Give the Choice or Choices That Makes the Statement True If two lines are cut by a transversal so that alternate interior angles are ___________, then the lines are parallel. If two lines are cut by a transversal so that same side interior angles are ___________, then the lines are parallel. congruent supplementary 9/21/2010 7 Clark - Ch 3.4

26. Give the Choice or Choices That Makes the Statement True If two lines are cut by a transversal so that ___________________________ are congruent, then the lines are parallel. alt interior angles, alt exterior angles, corresponding angles 9/21/2010 8 Clark - Ch 3.4

27. Complete the Two Column Proof Given Corres. ’s Postulate Given Transitive Alt. Ext ’s Converse 9/21/2010 9 Clark - Ch 3.4

28. Write a two column proof Statements Reasons 1.Given 1.l // m, 1  2 2.1  3 2.Corres. ’s Postulate 3.Transitive 3.2  3 4.a // b 4. Corres. ’s Converse 9/21/2010 10 Clark - Ch 3.4

29. Homework Pg 153-156 10-28, 34, 35, 45-48 9/21/2010 11 Clark - Ch 3.4