. _:vb50934805 . "SIO_000502" . "polyhedral skeleton"@en . . _:vb50934805 . . _:vb50934805 . _:vb50934805 . "A polyhedral skeleton is a collection of polygon edges."@en . _:vb50934805 ":arcc045b248" . . _:vb50934805 .