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  2. Rhombus - Wikipedia

    en.wikipedia.org/wiki/Rhombus

    Using congruent triangles, one can prove that the rhombus is symmetric across each of these diagonals. It follows that any rhombus has the following properties: Opposite angles of a rhombus have equal measure. The two diagonals of a rhombus are perpendicular; that is, a rhombus is an orthodiagonal quadrilateral. Its diagonals bisect opposite ...

  3. Rhombicosidodecahedron - Wikipedia

    en.wikipedia.org/wiki/Rhombicosidodecahedron

    Johannes Kepler in Harmonices Mundi (1618) named this polyhedron a rhombicosidodecahedron, being short for truncated icosidodecahedral rhombus, with icosidodecahedral rhombus being his name for a rhombic triacontahedron.

  4. List of two-dimensional geometric shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_two-dimensional...

    Rhombus; Square (regular quadrilateral) Tangential quadrilateral; Trapezoid. Isosceles trapezoid; Trapezus; Pentagon – 5 sides; Hexagon – 6 sides Lemoine hexagon; Heptagon – 7 sides; Octagon – 8 sides; Nonagon – 9 sides; Decagon – 10 sides; Hendecagon – 11 sides; Dodecagon – 12 sides; Tridecagon – 13 sides; Tetradecagon – 14 ...

  5. Lozenge (shape) - Wikipedia

    en.wikipedia.org/wiki/Lozenge_(shape)

    A lozenge (/ ˈ l ɒ z ɪ n dʒ / [1] LOZ-inj; symbol: ), often referred to as a diamond, is a form of rhombus.The definition of lozenge is not strictly fixed, and the word is sometimes used simply as a synonym (from Old French losenge) for rhombus.

  6. Merkel-Raute - Wikipedia

    en.wikipedia.org/wiki/Merkel-Raute

    Since its installation, the giant CDU campaigning poster has enjoyed prominence on the Internet, especially with the users of social networking services. [1] [18] The releasing of digitally altered images has turned into an Internet meme, most notably featuring Merkel's hands superimposed on images of Mr. Burns (whose trademark is a similar gesture), Grumpy Cat, Spock and others.

  7. Rhombic dodecahedron - Wikipedia

    en.wikipedia.org/wiki/Rhombic_dodecahedron

    The non-regularity of these images are due to projective distortion; the facets of the 24-cell are regular octahedra in 4-space. This decomposition gives an interesting method for constructing the rhombic dodecahedron: cut a cube into six congruent square pyramids, and attach them to the faces of a second cube.

  8. Penrose tiling - Wikipedia

    en.wikipedia.org/wiki/Penrose_tiling

    The pentagonal Penrose tiling (P1) drawn in black on a colored rhombus tiling (P3) with yellow edges. [ 15 ] The first Penrose tiling (tiling P1 below) is an aperiodic set of six prototiles, introduced by Roger Penrose in a 1974 paper, [ 16 ] based on pentagons rather than squares.

  9. File:Isotoxal rhombus.svg - Wikipedia

    en.wikipedia.org/wiki/File:Isotoxal_rhombus.svg

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