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Demostración de la fórmula A = base· altura para la obtención del área del paralelogramo.
Para los detalles, ver el fragmento [b]Área del paralelogranmo[/b] en https://www.epsilones.com/paginas/articulos/fragmentos-001-area-paralelogramo.html
[b]+ construcciones[/b]: https://www.epsilones.com/paginas/gg/gg-indice.html