普莱费尔公理
参见
平行公设使用 Wolfram|Alpha 探索
参考文献
Dunham, W. "Hippocrates' Quadrature of the Lune." Ch. 1 in Journey through Genius: The Great Theorems of Mathematics. New York: Wiley, p. 54, 1990.Henderson, D. W. Experiencing Geometry: On Plane and Sphere. Englewood Cliffs, NJ: Prentice-Hall, 1995.Playfair, J. Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Circle and the Geometry of Solids to which are added Elements of Plane and Spherical Trigonometry. New York: W. E. Dean, 1861.在 Wolfram|Alpha 中被引用
普莱费尔公理如此引用
Weisstein, Eric W. "普莱费尔公理。" 来自 MathWorld--Wolfram 网络资源。 https://mathworld.net.cn/PlayfairsAxiom.html