Collinear Orthocenters

Let O be the circumcenter of the triangle ABC. Let the line perpendicular to AO at O intersect AB and AC at M and N. Let the intersection of MC and NB be K. Let H and P be the orthocenters of ABC and AMN, respectively. Then H, P, and K are collinear.



  • [Snapshot]
  • [Snapshot]
  • [Snapshot]
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.