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Geometry Notes – Lesson 3.2 Name _________________________________ What is the converse? Conditional: If 2 lines are parallel, then the corresponding angles are congruent. Converse: If the ____________________________________________ are ___________, then the two lines are _____________________. Conditional: If 2 lines are parallel, then the alternate interior angles are congruent. Converse: If the ____________________________________________ are ___________, then the two lines are _____________________. Conditional: If 2 lines are parallel, then the alternate exterior angles are congruent. Converse: If the ____________________________________________ are ___________, then the two lines are _____________________. Conditional: If two lines are parallel, the same-side interior angles add up to 1800. Converse: If the ___________________________________________ add up to ______, then the two lines are ______________________. Summary: If you are to prove that lines are parallel, you will the converse postulates or theorems of: 1. _____________________________ 2. _________________________________ 3. _____________________________ 4. _________________________________ Why are these lines parallel? 1. 3. 2. 4. Are these lines parallel? If yes, state the postulate or theorem. 1. 2. 3. 4. 5. 6. Find x. 7. 8. 9. 10. 11. 12.