如果从一个 施泰纳链 由一个起始圆形成，那么从任何其他起始圆也将形成一个 施泰纳链。换句话说，给定两个 圆，一个在另一个内部，连续绘制与它们和彼此相切的 圆。如果最后一个圆与第一个圆相切，那么对于第一个 圆 的任何位置，这种情况也都会发生。
施泰纳闭包定理
另请参阅
Hexlet, 七圆定理, 施泰纳链使用 Wolfram|Alpha 探索
参考文献
Allanson, B. "Steiner's Porism" java applet. http://members.ozemail.com.au/~llan/steiner.html.Coolidge, J. L. A Treatise on the Geometry of the Circle and Sphere. New York: Chelsea, p. 34, 1971.Coxeter, H. S. M. "Interlocking Rings of Spheres." Scripta Math. 18, 113-121, 1952.Coxeter, H. S. M. Introduction to Geometry, 2nd ed. New York: Wiley, p. 87, 1969.Coxeter, H. S. M. and Greitzer, S. L. Geometry Revisited. Washington, DC: Math. Assoc. Amer., pp. 124-126, 1967.Forder, H. G. Geometry, 2nd ed. London: Hutchinson's University Library, p. 23, 1960.Gardner, M. "Mathematical Games: The Diverse Pleasures of Circles that Are Tangent to One Another." Sci. Amer. 240, 18-28, Jan. 1979.Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 113-115, 1929.Ogilvy, C. S. Excursions in Geometry. New York: Dover, pp. 53-54, 1990.Wells, D. The Penguin Dictionary of Curious and Interesting Geometry. London: Penguin, pp. 120 and 244-245, 1991.在 Wolfram|Alpha 上被引用
施泰纳闭包定理引用为
Weisstein, Eric W. “施泰纳闭包定理。” 来自 MathWorld--一个 Wolfram Web 资源。 https://mathworld.net.cn/SteinersPorism.html