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Lionel GERVAIS

  • Desargues theorem

    Activity

    Lionel GERVAIS

  • Desargues polar

    Activity

    Lionel GERVAIS

  • Universal Hyperbolic Geometry

    Book

    Lionel GERVAIS

  • Universal Hyperbolic Geometry : altitude point

    Activity

    Lionel GERVAIS

  • Universal Hyperbolic Geometry - Perpendicularity - 2D and 3D views

    Activity

    Lionel GERVAIS

  • Beltrami-Klein Disk Model

    Book

    Lionel GERVAIS

  • Beltrami disk model and Euclid's Fifth Postulate

    Activity

    Lionel GERVAIS

  • Universal Hyperbolic Geometry - Perpendicularity

    Activity

    Lionel GERVAIS

  • Universal Hyperbolic Geometry : Polarity

    Activity

    Lionel GERVAIS

  • Conjugate points with respect to a circle

    Activity

    Lionel GERVAIS

  • Red Geometry - Euler line and nine-point circle

    Activity

    Lionel GERVAIS

  • Green Geometry : Euler Line and Nine-point circle

    Activity

    Lionel GERVAIS

  • Chromogeometry : Omega Triangle

    Activity

    Lionel GERVAIS

  • Chromogeometry : Euler lines and Nine-point circles

    Activity

    Lionel GERVAIS

  • Poincaré and Beltrami–Klein disk models

    Activity

    Lionel GERVAIS

  • Chromogeometry

    Book

    Lionel GERVAIS