== {{-en-}} ==
{{-sost-|en}}
{{pn}}
#{{Term|matematica|en}} {{Term|geometria|en}} [[trigonometria]]

{{-ref-}}
*{{Fonte|wrenit}}
*{{Fonte|desan|en}}
*{{Fonte|dictionary}}
*{{Fonte|tfd|trigonometry}}
*{{Fonte|mew}}