Ptolemaeus Arabus et Latinus

✕☰

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Federico Commandino, In Planisphaerium Ptolemaei commentarius

Venice, Paulus Manutius Aldi, 1558 · 13r

ex quinta primi conicorum. Ellipsis vero cum aliter quomodocunque, ex decimatertia eiusdem, alioqui neque circulus erit, neque ellipsis, sed alia quaedam irregularis figura.