1. Proving Lines Are Parallel
Chapter 3 Section 3.4
Proving Lines Are Parallel

2. Warm-Up State the converse of each statement.
If <1 is a right angle, then m<1=90
2. If m<1 + m<2=180,
then <1 and <2 are supplementary.

3. When two lines are cut by a transversal so that…
Corresponding angles are , then the lines are parallel
Corresponding Angle Converse
Alternate Interior angles are , then the lines are parallel
Alt. Int. Angle Converse.
Alternate Exterior angles are  , then the lines are parallel
Alt. Ext Angle Converse
Consecutive Interior angles are Supplementary , then the lines are parallel
Con. Int. Angle Converse

4. Is It Possible to Prove That Lines P and Q Are Parallel
Is It Possible to Prove That Lines P and Q Are Parallel? If So Explain How. 1. 1 2.

5. Is It Possible to Prove That Lines P and Q Are Parallel
Is It Possible to Prove That Lines P and Q Are Parallel? If So Explain How. 3. 1

6. Find the Value of x That Makes p // q4. 5.

7. Find the Value of x That Makes p // q6.

8. Give the Choice or Choices That Makes the Statement True
If two lines are cut by a transversal so that alternate interior angles ___________, then the lines are parallel.
If two lines are cut by a transversal so that consecutive interior angles ___________, then the lines are parallel.

9. 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.

10. Complete the Two Column Proof

11. Write a two column proof
Statements Reasons