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- Some Results about Median Point of Any Polygon and Orthocenter of Any Inscribed Polygon of a Circle 关于多边形的顶点重心与圆内接多边形的垂心的若干结论
- inscribed polygon of a circle 圆内接多边形
- The axis of a circle is its diameter. 圆的轴线是其直径。
- The reciprocal of the radius of a circle. 曲率一个圆半径的倒数
- The diameter and the circumference of a circle. 圆的直径和圆周相关联。
- Tell the names of each part of a circle. 说出圆各部分的名称。
- He should have been the sun of a circle. 他本应该做一个周而复始的太阳。
- Almost all the balls follow the shape of a circle. 几乎所有球类都呈圆形。
- Circumference:The boundary line of a circle. 圆周:一个圆的边界线.
- A diameter passes through the center of a circle. 直径从圆心穿过。
- Teacher: What is the perimeter of a circle? 师:什么是圆的周长?
- Any two diameters of a circle intersect each other. 圆周内两直径必相交。
- Now he twisted himself into a circle, then stretched himself out on the ground like the trunk of a fallen tree. 它先把身子缩成一团,然后又申长,活象一截伐倒在地的树桩。
- The diameter and the circumference of a circle correlate. 圆的直径与圆周有相互关系。
- The object can be seen as a simple polygon of N vertexes. ,物体能被视为一个 N 顶点的简单多角形。
- Calculate the perimeter and the area of a circle skillfully. 熟练地进行周长和面积的计算。
- An arc is a part of the circumference of a circle or other curved lines. 弧是圆周或曲线的一部分。
- To mark or place(holes, for example) a fourth of a circle apart. 标示区域的四分之一将(如孔)标在或定在相距圆周的四分之一处
- The radius of a circle described by a crank, cam, or similar machine part. (曲轴的)半径曲柄、凸轮或类似机器部件形成的圆的半径
- An approach is presented to deform the selected edges of a convex polygon for getting a simple polygon which is closer to the outside shape of a point set within a plane. The convex polygon of a point set is constructed by Graham's algorithm. 构造了一个多边形边的形变模型 ;利用格雷厄姆快速算法得到平面点集凸包 ;通过添加点的方法有选择地修正凸包的一些边界 ;使得经过形变后的多边形在形状上更加接近平面点集的外形轮廓 .