1·Connect the first point of a curve or polyline with the last one.
连接曲线或多段线的第一点与最后一点。
2·For example, polyline requires four arguments: t has to be a Turtle;
例如，polyline这个多段线函数，需要四个实际参数：t必须是一个Turtle小乌龟；
3·I have reason to use Polygon over Polyline so Polyline is not an option.
我有理由使用多边形在多线多线不是一个选择。
4·You can make two more segments just to close that polyline in a closed curve.
您可以进行两个部分只关闭在一个封闭的曲线，折线。
5·In line 109, the polyline element is started, and an initial point is drawn at the origin of the axis.
第 109 行是 polyline 元素的起点，它与坐标轴的原点重合。
6·Presents an algorithm for polyline clipping based on a multiply connected domain formed by finite loops.
提出了一种有限环域裁剪多义线的算法。
7·This code will draw a feedback polyline and in the sixth map mouse up a polygon will be created and drawn as shown.
这些代码将会绘制一个反馈的线，当鼠标第六次谈起的的时候，将会创建一个多边形，绘制效果如下所示。
8·Furthermore, an example of polyline clipping based on a multiply connected domain formed by finite loops is presented.
文章还给出了一个由内、外环组成的有限环域裁剪一条多义线的实例。
9·Once you have worked through all the values in the array, the polyline is closed off and a style is applied to the line.
处理完数组中的值后封闭折线并应用适当的样式。
10·While creating a point shapefile, when you are prompted to add a polyline shape, add each vertex as an individual point.
在创建一个点shapefile时，若系统提示添加一个多线形状，那么就以单个点添加每个顶点。