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In geometry, a trapezoid (/ ˈ t r æ p ə z ɔɪ d /) in North American English, or trapezium (/ t r ə ˈ p iː z i ə m /) in British English, [1] [2] is a quadrilateral that has at least one pair of parallel sides. [3] The parallel sides are called the bases of the trapezoid.
Trapezium, plural trapezia, may refer to: Trapezium, in British and other forms of English, a trapezoid, a quadrilateral that has exactly one pair of parallel sides; Trapezium, in North American English, an irregular quadrilateral with no sides parallel; Trapezium (bone), a bone in the hand; Trapezium Cluster, a group of stars in the Orion Nebula
Any non-self-crossing quadrilateral with exactly one axis of symmetry must be either an isosceles trapezoid or a kite. [5] However, if crossings are allowed, the set of symmetric quadrilaterals must be expanded to include also the crossed isosceles trapezoids, crossed quadrilaterals in which the crossed sides are of equal length and the other sides are parallel, and the antiparallelograms ...
The trapezius muscle resembles a trapezium, also known as a trapezoid, or diamond-shaped quadrilateral. The word "spinotrapezius" refers to the human trapezius, although it is not commonly used in modern texts. In other mammals, it refers to a portion of the analogous muscle.
Updated Pro Bowl rosters are out. See who replaces the injured players and those on the Super Bowl-bound Philadelphia Eagles and Kansas City Chiefs.
Alton Harrell, Francis Buckheit, Daniel Burke, Elizabeth Hunter, Jacquelyn Comiskey, Robert Eccleston, Bunice Knight, Kevin McDonald and Ralph Knowles, were arraigned Thursday in connection to the ...
WASHINGTON (Reuters) -U.S. President Donald Trump said on Tuesday the United Nations has "great potential" but has to "get their act together," as he stopped U.S. engagement with the U.N. Human ...
θ 1 Orionis, the well known Trapezium cluster, is only 2 arc minutes away from θ 2 Orionis A. Despite the names, θ 2 Orionis A is marginally brighter than the brightest star in the Trapezium. The Catalog of Components of Double and Multiple Stars includes the stars of θ 1 and θ 2 Ori within the same system of 13 components.