trap·e·zoid
noun/ˈtræpəzɔɪd/
/ˈtræpəzɔɪd/
(geometry)- (British English)
enlarge image(North American English trapezium)a flat shape with four straight sides, none of which are parallel (= the same distance apart at every point)不规则四边形 - (North American English) (British English trapezium)a flat shape with four straight sides, one pair of opposite sides being parallel (= the same distance apart at every point) and the other pair not parallel
梯形
Word Originearly 18th cent.: from modern Latin trapezoides, from late Greek trapezoeidēs, from trapeza ‘table’.