是一个等倒点，如果对于曲线 
的每条弦 ![[x,y]](/images/equations/EquireciprocalPoint/Inline2.svg)
，
满足
 |
等倒点
。 另请参阅
等弦点, 等积点使用 探索
参考文献
Croft, H. T.; Falconer, K. J.; 和 Guy, R. K. Unsolved Problems in Geometry. New York: Springer-Verlag, p. 10, 1991.Falconer, K. J. "On the Equireciprocal Point Problem." Geom. Dedicata 14, 113-126, 1983.Hallstrom, A. P. "Equichordal and Equireciprocal Points." Bogasici Univ. J. Sci. 2, 83-88, 1974.Klee, V. "Can a Plane Convex Body have Two Equireciprocal Points?" Amer. Math. Monthly 76, 54-55, 1969.Klee, V. "Correction to 'Can a Plane Convex Body have Two Equireciprocal Points?' " Amer. Math. Monthly 78, 114, 1971.在 中被引用
等倒点请引用为
Weisstein, Eric W. "Equireciprocal Point." 来自 Web 资源。 https://mathworld.net.cn/EquireciprocalPoint.html