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Rhombicuboctahedron

Rhombicuboctahedron

Detail of rhombicuboctahedron, half-filled with water and characterized by a detailed triple reflection effect of the Ducal Palace of Urbino in the portrait of Renissance mathemetician Luca Pacioli painted by Jacopo de’ Barbari (attr.) and maybe (at least partially) by his collaborator Leonardo da Vinci.

Rhombicuboctahedron

According to one scholar, in the rhombicuboctahedron featured in the portrait “we surely see the ineffable left hand of Leonardo da Vinci, who drew the superb pictures for De divina proportione, which, moreover, hang from a string in the originals.” The same source points out that the dodecahedron in the portrait seems to be drawn by a less-skilled hand, implying that the portrait was created over multiple sittings and possibly by more than one artist.

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