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26 September, 19:07

Match the reasons with the statements in the proof if the last line of the proof would be 6. ∠1 and ∠7 are supplementary by definition. Given: s || t prove: 1, 7 are supplementary

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  1. 26 September, 22:17
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    Given : s||t

    Exterior sides in opposite rays : ∠5 and ∠7 are supplementary

    Definition of supplementary angles : m∠5 + m∠7 = 180°

    If lines are ||, corresponding angles are equal : m∠1 = m∠5

    Substitution : m∠1 + m∠7 = 180°
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