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[几何] 哪些四边形存在外接抛物线

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hbghlyj Posted at 2024-11-4 16:36:51 |Read mode

对于平面上的四个不同点 A、B、C、D，存在一条通过这四个点的非退化抛物线当且仅当这四个点形成一个非平行四边形的非退化凸四边形

外接抛物线

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Author| hbghlyj Posted at 2024-12-29 12:22:13

web.archive.org/web/0/http://www2.washjeff.ed … ermann/Dorrie/45.pdf
mathpages.com/home/kmath037/kmath037.htm
mathpages.com/home/kmath546/kmath546.htm

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