蜗牛线(英語:cochleoid)是一種蜗牛形的曲線,類似環索線,其极坐标系方程如下:
![Thumb](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/Cochleoid.svg/320px-Cochleoid.svg.png)
其笛卡儿坐标系方程如下
其參數方程如下
- J. Dennis Lawrence. A catalog of special plane curves. Dover Publications. 1972: 192. ISBN 0-486-60288-5.
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