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  2. Intersection curve - Wikipedia

    en.wikipedia.org/wiki/Intersection_curve

    Intersection curve. In geometry, an intersection curve is a curve that is common to two geometric objects. In the simplest case, the intersection of two non-parallel planes in Euclidean 3-space is a line. In general, an intersection curve consists of the common points of two transversally intersecting surfaces, meaning that at any common point ...

  3. Borromean rings - Wikipedia

    en.wikipedia.org/wiki/Borromean_rings

    alternating, hyperbolic. In mathematics, the Borromean rings[ a ] are three simple closed curves in three-dimensional space that are topologically linked and cannot be separated from each other, but that break apart into two unknotted and unlinked loops when any one of the three is cut or removed. Most commonly, these rings are drawn as three ...

  4. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    Two views of the utility graph, also known as the Thomsen graph or. The classical mathematical puzzle known as the three utilities problem or sometimes water, gas and electricity asks for non-crossing connections to be drawn between three houses and three utility companies in the plane. When posing it in the early 20th century, Henry Dudeney ...

  5. Vector graphics - Wikipedia

    en.wikipedia.org/wiki/Vector_graphics

    Vector graphics are a form of computer graphics in which visual images are created directly from geometric shapes defined on a Cartesian plane, such as points, lines, curves and polygons. The associated mechanisms may include vector display and printing hardware, vector data models and file formats, as well as the software based on these data ...

  6. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. [ 7 ] PNG files have the ".png" file extension and the "image/png" MIME media type. [ 8 ] PNG was published as an informational RFC 2083 in March 1997 and ...

  7. Traditional architecture of Papua New Guinea - Wikipedia

    en.wikipedia.org/wiki/Traditional_Architecture...

    Traditional architecture of Papua New Guinea. The traditional architecture of Papua New Guinea (PNG) reflects the diversity and ingenuity of this Pacific Island nation, with over 850 different ethnic groups each with its own distinct architectural styles, techniques, and materials. Their typical buildings range from houses on stilts to ...

  8. Cloverleaf interchange - Wikipedia

    en.wikipedia.org/wiki/Cloverleaf_interchange

    Beginning. The first cloverleaf interchange built in the United States was the Woodbridge Cloverleaf [5] at intersection of the Lincoln Highway (Route 25) and Amboy —now St. Georges—Avenue (Route 4) (now U.S. 1/9 and Route 35) in Woodbridge Township, New Jersey. [6][7][8] It opened in 1929, [9] although it has since been replaced with a ...

  9. Three Brothers, Riga - Wikipedia

    en.wikipedia.org/wiki/Three_Brothers,_Riga

    Coordinates: 56.9504103°N 24.1041863°E. The three brothers. The Three Brothers (Latvian: Trīs brāļi) is a building complex consisting of three houses, situated in Riga, Latvia. The houses together form the oldest complex of dwelling houses in Riga. Each house represents various periods of development of dwelling house construction.