曲率圓



橢圓的曲率圓  

動態模擬

參考資料:
    K. Rektorys (Ed.), Survey of Applicable Mathematics, London, Iliffe (1969),  p. 156.
    V. Lakshminarayanan and R.S. Vaishwanar, A Text Book on Practical Geometry or Geometrical Drawing, Jain Brothers, pp. 238-239.
    C.C.L. Sells, Construction of Centre of Curvature on a Conic, Eureka, Oct. 1958, No. 21, pp. 26-27.



雙曲線的曲率圓

動態模擬



拋物線的曲率圓

動態模擬



星狀線 [Maple Plot]


三角線



雙紐線 參考資料: R.C. Yates, Curvature of rn=cos nt, Amer. Math. Monthly, March 1960, pp. 275-278.  



玫瑰線的曲率圓



次擺線的曲率圓


漸屈線與漸伸線