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  • ...oint | de Longchamps point]] <math>L</math>. It is named after [[Leonhard Euler]]. Its existence is a non-trivial fact of Euclidean [[geometry]]. Certain Euler line is the central line <math>L_{647}</math>.
    59 KB (10,203 words) - 03:47, 30 August 2023
  • [[Image:Euler Line.PNG|thumb|500px|right| Triangle ''ABC'' with the nine-point circle in light The '''nine-point circle''' (also known as ''Euler's circle'' or ''Feuerbach's circle'') of a given [[triangle]] is a circle w
    6 KB (1,027 words) - 01:16, 19 February 2025
  • [[File:Simson line.png|270px|right]] [[File:Problem on Simson line.png |400px|right]]
    4 KB (638 words) - 08:28, 5 August 2024
  • ...of a given triangle together with two of its sides forms a triangle whose Euler line is in parallel with the third side of the given triangle. ...mberling point <math>X(402).</math> It is the crosspoint of Gauss line and Euler line.
    18 KB (3,046 words) - 05:44, 19 January 2023