Two-fold rotational symmetry in art: example n.1

<p>The image shows a two-fold rotational symmetry displayed by the decorations of two wood-covers of Tibetan books. The symmetry is rendered by two animals (peacocks and lions). The covers are exhibited at the Museo d&#39;Arte Orientale di Torino. The use of two-fold symmetry in icons is very old&nbsp; ( see&nbsp;Amelia Carolina Sparavigna, The Symmetries of the Icons on Ancient Seals, International Journal of Sciences 08(2013):14-20 DOI: 10.18483/ijSci.231 )</p>