reguladetri
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Swedish
[edit]
Etymology
[edit]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.
Noun
[edit]reguladetri c
- (mathematics) proportionality, cross-multiplication, the art of determining an unknown 4th value from 3 known values (a/b=c/d gives ad=bc)
Declension
[edit]| Declension of reguladetri | ||||
|---|---|---|---|---|
| Uncountable | ||||
| Indefinite | Definite | |||
| Nominative | reguladetri | reguladetrin | — | — |
| Genitive | reguladetris | reguladetrins | — | — |