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Math Help - Circle Proof

  1. #1
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    Circle Proof

    My circle geometry is useless can anyone do this or give me hints on how to do this thanks nath
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  2. #2
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    <BAC = <ACE (Note the parallel lines AB and EC, then use alternate interior angles)

    arc AE = 2<ACE (Inscribed angle theorem)
    arc AC = 2<BAC (Angle between tangent and chord theorem)

    arc AE=arc AC (Symettric and Transitive property)
    arc AC=arc CD (Equal chords create equal arcs)

    arc AE=arc CD (Transitive property)
    <EDA = <DAC (Inscribed angles in equal arcs are equal)

    ED||AC (Converse of parallel posulate, since <EDA and <DAC are alternate interior and are equal we conclude the two lines are parallel).
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  3. #3
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    Thanks that should help
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