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Geometry Proofs Worksheets | Proving Lines Parallel - Free Printable

Educational worksheet: Geometry Proofs Worksheets | Proving Lines Parallel. Download and print for classroom or home learning activities.

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1. ∠MPN ≅ ∠NPQ
2. Given
3. ∠MPN and ∠NPQ are alternate interior angles.
4. If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are parallel.
5. MP || QN
6. Definition of parallel lines

1. m∠B + m∠C = 180°
2. Given
3. ∠B and ∠C are consecutive interior angles.
4. If two lines are cut by a transversal so that consecutive interior angles are supplementary, then the lines are parallel.
5. AB || CD
6. Definition of parallel lines

Parent Tip: Review the logic above to help your child master the concept of high school geometry proofs worksheet.

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