| 单词 | 平面图形 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔extent〕A plane figure is 2-extent.平面图形是二维的。英汉大词典〔figure〕A circle is a closed plane figure.圆是一个封闭的平面图形。韦氏高阶〔figure〕A triangle is a plane figure.三角形是平面图形美国传统〔lozenge〕A four-sided planar figure with a diamondlike shape; a rhombus that is not a square.菱形：钻石形状的四边平面图形；不是正方形的菱面体美国传统〔parallelogram〕A four-sided plane figure with opposite sides parallel.平行四边形：一种有四条边且每两条边对应平行的平面图形美国传统〔plane geometry〕The geometry of planar figures.平面几何：平面图形的几何学美国传统〔planimeter〕An instrument that measures the area of a plane figure as a mechanically coupled pointer traverses the perimeter of the figure.测面仪：一种仪器，当机械连结的探针扫过平面图形的周线时能测出图形的面积美国传统〔planisphere〕A representation of a sphere or part of a sphere on a plane surface.平面球形图：在平面图形上对一个球或球的一部分的表示美国传统〔polygon〕A closed plane figure bounded by three or more line segments.多边形；多角形：由三条或更多的线段围成的一个封闭的平面图形美国传统〔quadrangle〕Mathematics A plane figure consisting of four points, no three of which are collinear, connected by straight lines.【数学】 四边形，四角形：由四个角组成的平面图形，没有任何三个点共线，通过直线相连接美国传统〔quadrant〕The plane area bounded by such an arc and two perpendicular radii.四分之一圆，扇形体：由九十度弧与两条垂直的半径围成的平面图形美国传统〔quadrilateral〕A plane figure with four sides and four angles.四边形：有四个边和四个角的平面图形美国传统〔side〕A line bounding a plane figure.边线：限定一平面图形的线美国传统〔triangle〕The plane figure formed by connecting three points not in a straight line by straight line segments; a three-sided polygon.三角形：一种由直线线段连接不在一条直线上的三点形成的平面图形；三边图形美国传统 |
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