== {{-bs-}} ==
[[File:Semiretta.svg|thumb|600px]]
{{-sost-|bs}}
{{Pn}}
# {{Term|matematica|bs}} {{Term|geometria|bs}} [[semiretta]]

== {{-sh-}} ==
{{-sost-|sh}}
{{Pn}}
# {{Term|matematica|sh}} {{Term|geometria|sh}} [[semiretta]]