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                ![](http://www.rhinostudio.cn/files/course/2019/05-03/100808888d3f709888.png) ## **Point Polar** 極點坐標系。根據xy平面角度,與z軸角度,和距離平面原點長度來定位空間當中任意一個點。看一下下面這個圖,你可能會更加直觀這個坐標系在實際當中的應用。 ![](http://www.rhinostudio.cn/files/course/2019/05-02/215431729911469892.gif)
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