== {{-de-}} ==
[[File:Retta.svg|thumb|600px]]
{{-loc nom-|de}}
{{Pn}}
# {{Term|matematica|de}} {{Term|geometria|de}} [[linea retta]]
# {{Term|matematica|de}} {{Term|geometria|de}} [[retta]]

{{-sin-}}
* [[Gerade#Tedesco|Gerade]]