Remarks on orthocenters, Pappus’ theorem and Butterfly theorems
Autor: | Rudolf Fritsch |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Journal of Geometry. 107:305-316 |
ISSN: | 1420-8997 0047-2468 |
DOI: | 10.1007/s00022-015-0304-0 |
Popis: | We present a generalization of the notion of the orthocenter of a triangle and of Pappus’ theorem. Both subjects were discussed with Pickert in the last year of his life. Furthermore we add a projective Butterfly theorem which covers all known affine cases. |
Databáze: | OpenAIRE |
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