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Math Help - Proving XY is perpendicular on :CD

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    Proving XY is perpendicular on :CD

    In cyclic quadrilateral :ABCD the point :E is in the middle of:BC, the perpendicular on :BC pass the point:E and intersect :AB in:X ,and the perpendicular on:AD pass the point:E and intersect :CD in :Y ,what is the proof that: XY is perpendicular on :CD
    Last edited by Mhmh96; August 25th 2012 at 10:00 PM.
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    Re: Proving XY is perpendicular on :CD

    Quote Originally Posted by Mhmh96 View Post
    In cyclic quadrilateral :ABCD the point :E is in the middle of:BC, the perpendicular on :BC pass the point:E and intersect :AB in:X ,and the perpendicular on:AD pass the point:E and intersect :CD in :Y ,what is the proof that: XY is perpendicular on :CD
    Is there a diagram for this? I can't seem to construct it.

    -Dan
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    Re: Proving XY is perpendicular on :CD

    I cant understand perfectly.Is there any diagram for this please provide it?
    Thank you
    Bizworldusa
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    Re: Proving XY is perpendicular on :CD

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