![Trapezium-trapezoid-comparisons](https://upload.wikimedia.org/wikipedia/commons/7/74/Trapezium-trapezoid-comparisons.png)
Trapezium may refer to:
Geometry
*Outside the US and Canada, a quadrilateral with at least one pair of parallel sides (known in the US as a
trapezoid
A quadrilateral with at least one pair of parallel sides is called a trapezoid () in American and Canadian English. In British and other forms of English, it is called a trapezium ().
A trapezoid is necessarily a Convex polygon, convex quadri ...
)
*In the US and Canada, a
quadrilateral
In geometry a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices). The word is derived from the Latin words ''quadri'', a variant of four, and ''latus'', meaning "side". It is also called a tetragon, ...
with no parallel sides (known elsewhere as a general irregular quadrilateral)
Other uses
*
Trapezium (bone)
The trapezium bone (greater multangular bone) is a carpal bone in the hand. It forms the radial border of the carpal tunnel.
Structure
The trapezium is distinguished by a deep groove on its anterior surface. It is situated at the radial side of ...
, a bone in the wrist
*
Trapezium (astronomy)
The Trapezium or Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis, 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 4 Fe ...
, a group of stars in the Orion Nebula
See also
*
Trapezius
The trapezius is a large paired trapezoid-shaped surface muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae of the spine and laterally to the spine of the scapula. It moves the scapula and supports the ...
, a muscle
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