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Sec. 3-2 Proving Parallel Lines

Now we will work the proofs backwards. . In the last section we started with // lines and worked toward the angles. In this section we will start with the angles and work towards the // lines.. P(3-2) Converse of the Corresponding Angle Theorem. If two lines

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Sec. 3-2 Proving Parallel Lines

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    1. Sec. 3-2 Proving Parallel Lines Objective: To use a Transversal in Proving Lines Parallel. To relate Parallel & Perpendicular Lines.

    2. Now we will work the proofs backwards. In the last section we started with // lines and worked toward the angles. In this section we will start with the angles and work towards the // lines.

    3. P(3-2) Converse of the Corresponding Angle Theorem If two lines & a transversal intersect to form corresponding angles that are congruent then the two lines are //.

    4. Th(3-3) Converse of the Alternate Interior Angle Theorem If two lines & a transversal intersect to form Alternate Interior that are congruent then the two lines are //.

    6. Th.(3-4) Converse of Same-Sided Interior Angle Theorem. If two lines & a transversal intersect to form same - sided interior angles that are supplementary then the two lines are //.

    8. Th(3-5) If two lines are // to the same line, then they are // to each other.

    9. Th(3-5) If two lines are // to the same line, then they are // to each other.

    10. Th(3-5) In a plane, if 2 lines are perpendicular to the same line, then they are // to each other.

    13. Example 2: Find the m?1

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