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El principio de dualidad: teoremas de Brianchon y Pascal
Se ejemplifica el principio de dualidad con los teoremas de Pascal y de Brianchon.
Para más detalles, ver [b]El principio de dualidad: los teoremas de Pascal y Brianchon[/b] en https://www.epsilones.com/paginas/historias/historias-018-principiodualidad.html
[b]+ construcciones[/b]: https://www.epsilones.com/paginas/gg/gg-indice.html