Last modified on 21 September 2013, at 02:22

reguladetri

SwedishEdit

Swedish Wikipedia has an article on:

Wikipedia sv

EtymologyEdit

From Latin regula (rule), de (of), tribus (three), cognate with German Regeldetri, used in Swedish since 1584. The term was used in Swedish school curriculums until the 1960s.

NounEdit

reguladetri c

  1. (mathematics) proportionality, cross-multiplication, the art of determining an unknown 4th value from 3 known values (a/b=c/d gives ad=bc)

DeclensionEdit

ReferencesEdit