| 释义 |
trapezoid
 trapezoidtrap·e·zoid T0327600 (trăp′ĭ-zoid′)n.1. Mathematics a. A quadrilateral having two parallel sides.b. Chiefly British A trapezium.2. Anatomy A small bone in the wrist, situated near the base of the index finger.3. Sports An area in the shape of a trapezoid marked behind the goal line and the goal in ice hockey, where the goalie is allowed to play the puck.
[Originally, a quadrilateral with no parallel sides (later confused with trapezium, originally, a quadrilateral with two parallel sides), from New Latin trapezoīdēs, a quadrilateral with no parallel sides, from Late Greek trapezoeidēs, from Greek table-shaped : trapeza, table; see trapezium + -oeidēs, -oid.]
trap′e·zoid′, trap′e·zoi′dal (-zoid′l) adj.trapezoid (ˈtræpɪˌzɔɪd) n1. (Mathematics) a quadrilateral having neither pair of sides parallel2. (Mathematics) Also called: trapezium (Brit, Austral., NZ, and South African)US and Canadian a quadrilateral having two parallel sides of unequal length3. (Anatomy) a small bone of the wrist near the base of the index finger[C18: from New Latin trapezoidēs, from Late Greek trapezoeidēs trapezium-shaped, from trapeza table]trap•e•zoid (ˈtræp əˌzɔɪd)
n. 1. a. a quadrilateral plane figure having two parallel and two nonparallel sides. b. Brit. trapezium (def. 1b). 2. the mammalian wrist bone that articulates with the metacarpal of the second digit or forefinger. adj. 3. Also, trap`e•zoi′dal. of, pertaining to, or having the form of a trapezoid. [1695–1705; < New Latin trapezoīdēs < Late Greek trapezoeidḗs trapeziumlike. See trapezium, -oid] ![]() trapezoidtrap·e·zoid (trăp′ĭ-zoid′) A four-sided figure having two parallel sides.Thesaurus| Noun | 1. |  trapezoid - a quadrilateral with two parallel sidesU.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776quadrangle, quadrilateral, tetragon - a four-sided polygon | | 2. |  trapezoid - the wrist bone between the trapezium and the capitate bonesos trapezoideum, trapezoid bonecarpal, carpal bone, wrist bone - any of the eight small bones of the wrist of primates |
Translationstrapezoidetrapeziotrapeziumvierhoektrapezтрапециевидныйтрапецияtrapezoid
trapezoid, closed plane figure bounded by four line segments, or sides, two of which are parallel and two of which are nonparallel. The parallel sides of a trapezoid are called bases and the nonparallel sides legs; in an isosceles trapezoid the legs are of equal length. The median of a trapezoid is the line segment connecting the midpoints of the legs; it is parallel to the bases and equal to half the sum of their lengths. The altitude of a trapezoid is the perpendicular distance between the bases. The area of a trapezoid is equal to half the product of the altitude and the sum of the bases, i.e., to the product of the altitude and the median.TrapezoidA four-sided figure with unequal sides; a parallel trapezoid has two unequal parallel sides and two equal nonparallel sides; a symmetrical trapezoid has two pairs of adjacent equal sides.Trapezoid a convex quadrilateral having two parallel and two nonparallel sides (see Figure 1). The parallel sides are called the bases of the trapezoid, and the nonparallel sides are sometimes referred to as the trapezoid’s legs. The line segment joining the midpoints of the nonparallel sides is called the median, or midline. The median is parallel to the bases, and its length is equal to half the sum of their lengths. The area of a trapezoid is equal to the product of the trapezoid’s altitude and the length of its median. The area is also equal to half the product of the lengths of the diagonals and the sine of the angle between them. In an isosceles trapezoid, the nonparallel sides are of equal length.  Figure 1
trapezoid[′trap·ə‚zȯid] (mathematics) A quadrilateral having two parallel sides. trapezoid1. a quadrilateral having neither pair of sides parallel 2. US and Canadian a quadrilateral having two parallel sides of unequal length 3. a small bone of the wrist near the base of the index finger trapezoid
trap·e·zoid (trap'ĕ-zoyd), [TA] 1. Resembling a trapezium. Synonym(s): trapeziform2. A geometric figure resembling a trapezium except that two of its opposite sides are parallel. 3. Synonym(s): trapezoid (bone)4. Synonym(s): trapezoid body [G. trapeza, table, + eidos, resemblance] trapezoid (trăp′ĭ-zoid′)n. Anatomy A small bone in the wrist, situated near the base of the index finger.
trap′e·zoid′, trap′e·zoi′dal (-zoid′l) adj.trap·e·zoid (trap'ĕ-zoyd) [TA] 1. Resembling a trapezium.
Synonym(s): trapeziform. 2. A geometric figure resembling a trapezium except that two of its opposite sides are parallel. 3. Synonym(s): trapezoid bone. [G. trapeza, table, + eidos, resemblance]trapezoid
Related to trapezoid: Trapezoid ruleSynonyms for trapezoidnoun a quadrilateral with two parallel sidesRelated Words- U.S.A.
- United States
- United States of America
- US
- USA
- America
- the States
- U.S.
- quadrangle
- quadrilateral
- tetragon
noun the wrist bone between the trapezium and the capitate bonesSynonyms- os trapezoideum
- trapezoid bone
Related Words- carpal
- carpal bone
- wrist bone
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