URN:NBN:SI:doc-OJRLL9LQ1987Petek, Peterdocuments/doc/O/URN_NBN_SI_doc-OJRLL9LQ_001.pdfdocuments/doc/O/URN_NBN_SI_doc-OJRLL9LQ_001.txt146articlestr. 3380351-66528811097URN:NBN:SI:doc-OJRLL9LQslvDruštvo matematikov, fizikov in astronomov SlovenijePresekInCgeometrijageometrymatematikamathematicstriangletrikotnik