Tutorial for/za material: http://tube.geogebra.org/material/show/id/148786
Imate 10 novih alatki koje odredjuju zlatni presek (isecak,pravougaonik,тrougao) i korišćenje u matematici, arhikteturi, prirodi, čoveku! / You have 10 new tools to determine the golden ratio ( sector, spiral, rectangle, triangle) and the use in mathematics, architecture, nature, people!
