아래 웹사이트 링크 모음: [br]https://play.google.com/store/apps/details?id=com.olehyudin.icrosss[br]https://polyhedra.tessera.li/[br]http://dmccooey.com/polyhedra/[br]https://www.polyhedra.net/en/[br]https://www.georgehart.com/sculpture/sculpture.html[br]https://www.geogebra.org/m/qwj9aqmn[br]https://p3d.in/u/laruddy/j2uJ9[br]http://www.rinusroelofs.nl/rhinoceros/slide-together/slide-035.html[br]https://www.geogebra.org/m/q2v7pt9x