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Prove that

  1. Sep 23, 2010 #1
    Prove that there exist

    (a) 5 points in the plane so that among all the triangles with vertices among these points there are 8 right-angled ones;

    (b) 64 points in the plane so that among all the triangles with vertices among these points there are at least 2005 right-angled ones.
     
  2. jcsd
  3. Sep 23, 2010 #2

    CRGreathouse

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  4. Sep 23, 2010 #3
    hey thanks for the website... looks good

    thanks again
     
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