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- A closed plane figure bounded by three or more line segments. 多邊形；多角形由三條或更多的線(xiàn)段圍成的一個(gè)封閉的平面圖形
- a closed plane figure bounded by straight sides. 被垂直的面限制邊界的有限平面形。
- a closed plane figure bounded by three or more line segments 由三條或更多的線(xiàn)段圍成的一個(gè)封閉的平面圖形
- A four-sided plane figure with four right angles. 矩形，長(cháng)方形具有四個(gè)邊的方形，有四個(gè)直角
- A plane figure with four sides and four angles. 四邊形有四個(gè)邊和四個(gè)角的平面圖形
- A four-sided plane figure with opposite sides parallel. 平行四邊形一種有四條邊且每?jì)蓷l邊對應平行的平面圖形
- A plane figure bounded by two radii and the included arc of a circle. 由兩個(gè)半徑和兩個(gè)半徑中間的弧所形成的一個(gè)平面形狀。
- An instrument that measures the area of a plane figure as a mechanically coupled pointer traverses the perimeter of the figure. 測面儀一種儀器，當機械連結的探針掃過(guò)平面圖形的周線(xiàn)時(shí)能測出圖形的面積
- A plane figure consisting of four points,no three of which are collinear,connected by straight lines. 四邊形，四角形由四個(gè)角組成的平面圖形，沒(méi)有任何三個(gè)點(diǎn)共線(xiàn)，通過(guò)直線(xiàn)相連接
- A plane figure consisting of four points, no three of which are collinear, connected by straight lines. 四邊形，四角形由四個(gè)角組成的平面圖形，沒(méi)有任何三個(gè)點(diǎn)共線(xiàn)，通過(guò)直線(xiàn)相連接
- Mathematics A plane figure consisting of four points, no three of which are collinear, connected by straight lines. 四邊形，四角形：由四個(gè)角組成的平面圖形，沒(méi)有任何三個(gè)點(diǎn)共線(xiàn)，通過(guò)直線(xiàn)相連接
- At an angle,especially connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face. 傾斜的，尤其是連接平面圖上兩個(gè)不相鄰的角落的，或連接多面體任意兩個(gè)不在同一面上的頂點(diǎn)的直線(xiàn)的。
- Which of the following plane figures have reflectional symmetry? 下列哪些平面圖形具有反射對稱(chēng)性質(zhì)？
- The surface generated by a straight line intersecting and moving along a closed plane curve, the directrix, while remaining parallel to a fixed straight line that is not on or parallel to the plane of the directrix. 柱面一條直線(xiàn)與一個(gè)封閉的平面曲線(xiàn)相交及沿著(zhù)平面曲線(xiàn)移動(dòng)所形成的平面，準線(xiàn)則與一個(gè)不在此準線(xiàn)平面上或者不與此準線(xiàn)平面平行的固定直線(xiàn)保持平行
- The plane figure formed by connecting three points not in a straight line by straight line segments;a three - sided polygon. 三角形一種由直線(xiàn)線(xiàn)段連接不在一條直線(xiàn)上的三點(diǎn)形成的平面圖形；三邊圖形
- The plane figure formed by connecting three points not in a straight line by straight line segments; a three-sided polygon. 三角形一種由直線(xiàn)線(xiàn)段連接不在一條直線(xiàn)上的三點(diǎn)形成的平面圖形；三邊圖形
- A triangle is a plane figure. 三角形是平面圖形
- An instrument for copying a plane figure to a desired scale,consisting of styluses for tracing and copying mounted on four jointed rods in the form of a parallelogram with extended sides. 縮放儀一種按所需的比例復制平面圖片的儀器，由用于描繪和復制的描畫(huà)針組成，描畫(huà)針置于四根有活節的桿上，四根桿構成可調整邊長(cháng)的平行四邊形
- This article has studied the definite integral used in the physics application from power,force,moment of inertia,orthocenter of plane figure and calculation of inertia moment,mainly utilizing the research method from particulars to generals. 本文從功、力、轉動(dòng)慣量、平面圖形的形心和慣性矩的計算這幾個(gè)方面研究了定積分在物理學(xué)中的應用，主要運用了從特殊推廣到一般的研究方法。
- An instrument for copying a plane figure to a desired scale, consisting of styluses for tracing and copying mounted on four jointed rods in the form of a parallelogram with extended sides. 縮放儀一種按所需的比例復制平面圖片的儀器，由用于描繪和復制的描畫(huà)針組成，描畫(huà)針置于四根有活節的桿上，四根桿構成可調整邊長(cháng)的平行四邊形
