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

Geometry

Other uses

See also