Trapezium, plural trapezia, may refer to: * Trapezium, in British and other forms of English, a

trapezoid In geometry, a trapezoid () in North American English, or trapezium () in British English, is a quadrilateral that has at least one pair of parallel sides. The parallel sides are called the ''bases'' of the trapezoid. The other two sides are ...

, a quadrilateral that has exactly one pair of parallel sides * Trapezium, in North American English, an irregular

quadrilateral In Euclidean geometry, geometry a quadrilateral is a four-sided polygon, having four Edge (geometry), edges (sides) and four Vertex (geometry), corners (vertices). The word is derived from the Latin words ''quadri'', a variant of four, and ''l ...

with no sides parallel *

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 o ...

, a bone in the hand *

Trapezium Cluster The Trapezium or Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis (θ1 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 Galile ...

, a group of stars in the Orion Nebula * ''Trapezia'' (genus), guard crabs * ''Trapezium'' (novel), a Japanese novel by Kazumi Takayama

See also