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  1. #1
    Silver Lounger
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    A Proof / Flashback to 9th G

    <P ID="nt"><font size=-1>(No Text)</font>
    - Ricky

  2. #2
    Plutonium Lounger
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    Re: A Proof / Flashback to 9th G

    <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">Since WA is parallel to ED, angle AWM = angle EDM, and angle WAM = angle DEM. Together with WA = ED, we conclude that triangle WAM is congruent to triangle DEM. So WM = DM and AM = EM. Obviously, angle WME = angle DMA, so triangle WME is congruent to triangle DMA. So angle EWM = angle ADM, and hence WE is parallel to AD.</span hide>

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