Geometry worksheet on parallel lines and transversals with angle theorems and diagrams.

Diagrams illustrating parallel lines and transversals with angle relationships, including corresponding, alternate interior, and same-side interior angles, used in a geometry worksheet.

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Show Answer Key & Explanations Step-by-step solution for: Proving Lines Parallel Homework Worksheet for 9th - 12th Grade ...

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1. If m∠1 = m∠5, then line a is parallel to line b.
2. If m∠3 = m∠6, then line a is parallel to line b.
3. If m∠1 + m∠8 = 180°, then line a is parallel to line b.
4. If m∠2 = m∠7, then line a is parallel to line b.
5. If m∠4 = m∠5, then line a is parallel to line b.
6. If m∠3 = m∠8, then line a is parallel to line b.
7. If m∠1 + m∠4 = 180°, then line a is parallel to line b.
8. If m∠2 + m∠5 = 180°, then line a is parallel to line b.
9. If m∠7 = m∠8, then line a is parallel to line b.
10. If m∠4 = m∠7, then line a is parallel to line b.
11. If m∠1 = m∠8, then line a is parallel to line b.
12. If m∠BAD + m∠CBA = 180°, then line AD is parallel to line BC.
13. If m∠2 = m∠3, then line AB is parallel to line CD.

Parent Tip: Review the logic above to help your child master the concept of parallel line proofs worksheet.

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