Avtor: Valentina Volk

https://eucbeniki.sio.si/mat4/78/index3.html https://uciteljska.net/kvizi/HotPot/GEOM_T_1R/15.VAJA.htm http://www.os-kobarid.si/files/2020/04/MAT-3-Geom.-telesa-1.pdf https://iucitelj.si/sl/gradivo/87/piramida