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Outline

  1. Proofs on Parallel Lines
    1. Vertical Angle Theorem
    2. Two-column proof (Corresponding Angles)
    3. Two-column Proof (Alt Int. Angles)
    4. Same-side Interior Angles Postulate
    5. Converse of Same Side Interior Angles Postulate
    6. Prove Converse of Alternate Interior Angles Theorem
    7. Converse of Corresponding Angles Theorem
    8. Proving Lines Parallel #1

Proofs on Parallel Lines

Author:Patricia Angela Santos, Jenny Secor

  • Vertical Angle Theorem

  • Two-column proof (Corresponding Angles)

  • Two-column Proof (Alt Int. Angles)

  • Same-side Interior Angles Postulate

  • Converse of Same Side Interior Angles Postulate

  • Prove Converse of Alternate Interior Angles Theorem

  • Converse of Corresponding Angles Theorem

  • Proving Lines Parallel #1

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