【螺线】
螺线（spiral）是指一些围着某些定点或轴旋转且不断收缩或扩展的曲线。
== 二维螺线 ==
* 费马螺线
* 等角螺线
* 双曲螺线
* 圆内螺线
* 阿基米德螺线
* 连锁螺线
* 柯奴螺线
* 欧拉螺线
== 参考文献 ==
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* Miura, K., Sone, J., Yamashita, A., Kaneko, T., 2005. Derivation of a general formula of aesthetic curves. In: 8th International Conference on Humans and Computers (HC2005). Aizu-Wakamutsu, Japan, pp. 166 – 171 .
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* Ziatdinov, R., Yoshida, N., Kim, T., 2012. Analytic parametric equations of log-aesthetic curves in terms of incomplete gamma functions. Computer Aided Geometric Design 29 (2), 129 – 140  date=20150924164037 .
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* Ziatdinov, R., 2012. Family of superspirals with completely monotonic curvature given in terms of Gauss hypergeometric function. Computer Aided Geometric Design 29(7): 510-518   date=20150924164038 .
* Ziatdinov, R., Miura K.T., 2012. On the Variety of Planar Spirals and Their Applications in Computer Aided Design. European Researcher 27(8-2), 1227-1232  date=20200723082739 .