# Parallel line proofs

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##### Intros

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##### Examples

###### Lessons

- What is the value of x if $\overline {AB}$ $\parallel$ $\overline {CD}$ ?
- Determine if enough information is given to prove $p \parallel$ $q$ State the postulates or theorems you use in your answers.
- Prove that if two lines are cut by a transversal so the alternate exterior angles are congruent, then the lines are parallel. (Prove the Alternate Exterior Angles converse)
- Write a two-column proof.