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geometry problem

Discussion in 'DAT Discussions' started by Greensalad, May 8, 2007.

  1. Greensalad

    Greensalad 10+ Year Member

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    Apr 16, 2007
    from topscore, "chords AB and CD of circle O intersect at E. If AE=4, AB=5, CE=2, find ED"

    What is this picture supposed to look like???

    topscore didn't draw it out, it just said make the lines touch the circle
     
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  3. Law0830

    Law0830 Junior Member 2+ Year Member

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    Apr 9, 2006
    well you should obvioiusly have a circle and a chord is a line that runs inside the circle but does not pass the center of the circle. SO all you have are two chords of different length intersecting each other.
     
  4. DentalKitty

    DentalKitty 5+ Year Member

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    Mar 12, 2007
    Is the answer ED=2?
     
  5. Greensalad

    Greensalad 10+ Year Member

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    Apr 16, 2007
    OBVIOUSLY...topscore says "draw a circle with center O. Draw an X above the circle connecting either side of the circle." what the hell is that? someone draw it out for me?
     
  6. Greensalad

    Greensalad 10+ Year Member

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    Apr 16, 2007
    that is correct and would be the case if the the lines were inside the circle, but topscore's solution says the lines intersect outside of the circle!
     
  7. DentalKitty

    DentalKitty 5+ Year Member

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    Mar 12, 2007
    Wow, that's weird. Wouldn't lines outside the circle be tangents vice chords? I think that may be what they are referring to, 2 tangents that cross outside the circle...
     
  8. DentalKitty

    DentalKitty 5+ Year Member

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    Mar 12, 2007
    FYI, I just solved it using similar triangles AEC and BED...
     
  9. Greensalad

    Greensalad 10+ Year Member

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    Apr 16, 2007
    By using the tangent chord diagram where neither of the chords are inside the circle?
     
  10. DentalKitty

    DentalKitty 5+ Year Member

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    Mar 12, 2007
    No, I used the chords inside the circle, sorry.
     
  11. Greensalad

    Greensalad 10+ Year Member

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    Apr 16, 2007
    This problem is so vague if what I'm about to say is true: the tangent lines end ONCE they touch the circle. Topscore sucks. Agree?
     

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