Trapezium
Encyclopedia
The word trapezium has several meanings:
  • (Outside the US) - a quadrilateral with one pair of parallel sides
    Trapezoid
    In Euclidean geometry, a convex quadrilateral with one pair of parallel sides is referred to as a trapezoid in American English and as a trapezium in English outside North America. A trapezoid with vertices ABCD is denoted...

     (a shape known in the US as a trapezoid
    Trapezoid
    In Euclidean geometry, a convex quadrilateral with one pair of parallel sides is referred to as a trapezoid in American English and as a trapezium in English outside North America. A trapezoid with vertices ABCD is denoted...

    ).
  • (In the US) - a quadrilateral
    Quadrilateral
    In Euclidean plane geometry, a quadrilateral is a polygon with four sides and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon , hexagon and so on...

     with no parallel sides (a shape known elsewhere as a general irregular quadrilateral).
  • Trapezium (bone)
    Trapezium (bone)
    The trapezium bone is a carpal bone in the wrist.The trapezium is distinguished by a deep groove on its palmar surface. It is situated at the radial side of the carpus, between the scaphoid and the first metacarpal bone...

    , a bone in the wrist
    Wrist
    In human anatomy, the wrist is variously defined as 1) the carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand;...

  • Trapezium (astronomy)
    Trapezium (astronomy)
    The Trapezium, or Orion Trapezium Cluster is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. It was discovered by Galileo Galilei. On February 4, 1617 he sketched three of the stars , but missed the surrounding nebulosity...

    , a group of stars in the Orion Nebula
    Orion Nebula
    The Orion Nebula is a diffuse nebula situated south of Orion's Belt. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light...

  • Trapezium (play), a play by Henry Rathvon
    Henry Rathvon
    Henry Rathvon is a puzzle writer. He and his partner, Emily Cox, wrote The Atlantic Puzzler, a cryptic crossword featured each month in the magazine The Atlantic Monthly from September 1977 to October 2009...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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