1. 3.3 Proving Lines are Parallel

2. Parallel Postulate Through a point p not on line l there is exactly one line parallel to line l

3. Converse Thms about Parallel Lines  If corresponding angles are congruent …  If alternate exterior angles are congruent …  If alternate interior angles are congruent …  If same-side interior angles are supplementary … Then, the lines are parallel !!!!

4. Can you prove any lines are ||? d c b a 112 ○ 110 ○ 112 ○

5. Ex: If x = 3, are the lines \\? 12y+4 14y 4x+12 8x If y = 11 are the lines \\?

6. StatementReason 1. 2. 3. 4.

7. StatementReason 1. 2. 3. 4. 5. 2 1 3 d a c b

8. Homework Group Problem Solving Packet (due end of period)  3-2 problem solving #4, 5  3-3 Problem solving ODDS  3-3 Prac B ALL Book work on syllabus