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Idan Tal

  • Octants

    Activity

    Idan Tal

  • Twelve rhombuses in a cube

    Activity

    Idan Tal

  • Six regular decagons in a dodecahedron form a icosidodecahedron

    Activity

    Idan Tal

  • Regular hexagon cross-sections of a dodecahedron

    Activity

    Idan Tal

  • Four regular hexagons in a cube form a cuboctahedron

    Activity

    Idan Tal

  • The stellated rhombic dodecahedron

    Activity

    Idan Tal

  • Compound of three octahedra

    Activity

    Idan Tal

  • Compound of five tetrahedra

    Activity

    Idan Tal

  • Compound of two tetrahedra

    Activity

    Idan Tal

  • Compound of five cubes

    Activity

    Idan Tal

  • Expansion of a rhombic dodecahedron

    Activity

    Idan Tal

  • Progressions between an octahedron, pseudoicosahedron and cuboctahedron

    Activity

    Idan Tal

  • Cuboctahedron

    Activity

    Idan Tal

  • Snub Cuboctahedron

    Activity

    Idan Tal

  • Transformation from a Cube to a Rhombic Triacontahedron

    Activity

    Idan Tal

  • Dancing Points on Regular Polygons

    Activity

    Idan Tal

  • Morphing Polyhedron

    Activity

    Idan Tal

  • reflect image

    Activity

    Idan Tal

  • An angle bisector of a triangle and an harmonic mean

    Activity

    Idan Tal

  • A tangent to an ellipse and chords with their midpoints parallel to it

    Activity

    Idan Tal

  • A parallelogram that inscribes an ellipse and an inner parallelogram inscribed in it

    Activity

    Idan Tal

  • The chord that connects the tangency points of two tangents that are parallel to the ellipse passes through the center of the ellipse

    Activity

    Idan Tal

  • A billiard table for illustrating the ellipse inscribed in a rectangle

    Activity

    Idan Tal

  • Presentation of the locus of the foci of an ellipse rotated inside a rectangle

    Activity

    Idan Tal