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https://www.journals.elsevier.com/polyhedron
https://www.sciencedirect.com/journal/polyhedron
https://www.polytopia.eu/en/detailansicht?id=902170
https://www.shodor.org/deafstemterms/polyhedron/word/1152/1128/add
https://www.khanacademy.org/math/basic-geo/basic-geo-volume-sa/basic-geometry-surface-area/v/nets-of-polyhedra
https://mathigon.org/course/polygons-and-polyhedra/polygons
https://www.britannica.com/science/polyhedron
https://artofproblemsolving.com/wiki/index.php/Polyhedron
https://royalsocietypublishing.org/doi/abs/10.1098/rsta.1975.0022
https://nzmaths.co.nz/content/polyhedra-3d-shapes
https://en.wiktionary.org/wiki/polyhedron
https://study.com/academy/lesson/polyhedra-definition-types.html
https://en.wikipedia.org/wiki/Polyhedron