[N-COUNT 可数名词]长方形;矩形 A rectangle is a four-sided shape whose corners are all ninety degree angles. Each side of a rectangle is the same length as the one opposite to it.
Oxford
rect·angle/ˈrektæŋɡl; NAmEˈrektæŋɡl/noun _quadrilaterals_comp.jpg _rectangle.jpg a flat shape with four straight sides, two of which are longer than the other two, and four angles of 90° 长方形;矩形▶rect·angu·lar/rekˈtæŋɡjələ(r); NAmErekˈtæŋɡjələr/adjectiverectanglerectanglesrect·angle/ˈrektæŋɡl; NAmEˈrektæŋɡl/rect·angu·lar/rekˈtæŋɡjələ(r); NAmErekˈtæŋɡjələr/