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Idan Tal
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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
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Idan Tal
Four regular hexagons in a cube form a cuboctahedron
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Idan Tal
The stellated rhombic dodecahedron
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Idan Tal
Compound of three octahedra
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Idan Tal
Compound of five tetrahedra
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Idan Tal
Compound of two tetrahedra
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Idan Tal
Compound of five cubes
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Idan Tal
Expansion of a rhombic dodecahedron
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Idan Tal
Progressions between an octahedron, pseudoicosahedron and cuboctahedron
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Idan Tal
Cuboctahedron
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Idan Tal
Snub Cuboctahedron
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Idan Tal
Transformation from a Cube to a Rhombic Triacontahedron
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Idan Tal
Dancing Points on Regular Polygons
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Idan Tal
Morphing Polyhedron
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Idan Tal
reflect image
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Idan Tal
An angle bisector of a triangle and an harmonic mean
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Idan Tal
A tangent to an ellipse and chords with their midpoints parallel to it
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Idan Tal
A parallelogram that inscribes an ellipse and an inner parallelogram inscribed in it
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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
An ellipse and the circle which lie the vertices of the rectangles that inscribe it
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Idan Tal