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11782incenters & squares

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  • Bernard Gibert
    Dec 1, 2005
      Dear friends,

      let P be a point on the circumcircle of triangle ABC with incenter I.

      denote by Pa, Pb, Pc the incenters of triangles PBC, PCA, PAB.

      I, Pa, Pb, Pc are the vertices of a rectangle.

      Find P such that the rectangle becomes a square.

      Perspectivities ?...

      Best regards


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