So an easy thing to do in planar geometry is I want to make a line segment.
在平面几何里比较容易的一件事，就是做一个线段。
An Edge is a line segment, and you add Edge objects to a design through the add_line method of the Entities class.
Edge是一条线段，可以通过entities类的add_line方法将Edge对象添加到设计中。
Some people say that life is a line segment.
有人说，人生就是一条线段。
Appends a line segment to the current figure.
向当前图形追加一条线段。
Appends a line segment to the current figure.
将直线线段附加到目前的图形。
A rapid judgment on relative position relations between a line segment and a circle is presented in this paper.
提出了一种直线段相对于圆形区域位置关系的快速判别方法。
Each additional point specifies the endpoint of a line segment whose starting point is the endpoint of the previous line.
每个额外的点会指定直线线段的结束点，这个线段的开始点为前一条直线的结束点。
An ordinary definite integral is defined over a line segment, whereas a line integral may use a more general path, such as a parabola or a circle.
普通定义的积分是定义在一段线段上的，而线积分则用更一般的路径，像抛物线或圆。
Calculating the mean of each type of data points, and the two average points in a line segment, the segment with a vertical split line as the classification boundary.
计算每类数据的均值点，并且把两个均值点连成一线段，用垂直平分该线段的直线作为分类边界。
Based on profound study of various position relations between a line segment and a circle, a simple and rapid clipping algorithm for circular window is presented in this paper.
通过对直线段相对圆的各种位置关系作深入的研究，提出了一种简单而迅速的圆形窗口裁剪算法。
A line segment forming part of the perimeter of a plane figure.
形成一个平面图形的边界的线段。
A line segment forming part of the perimeter of a plane figure.
形成一个平面图形的边界的线段。
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