"Το τρίγωνο έχει τρεις γωνίες."

[Dimitra956826]

(Random Info)

Phenomenically, angle and γωνία have no common origins. But angle actually comes from the Latin angulus (corner) and the word αγκύλος in greek means crooked, curved.

This symbol -> [ ] is also called αγκύλη in greek. because of the two small angles at the edges. So I guess there is some similarity after all. :P

[kirakrakra]

very interesting. Γωνία means knee. It comes from I.E. gen- (knee), from which La genu from which En knee

[rogerberm]

You don't say...

[AniruddhaJ20]

Interestiny, in Sanskrit, an angle is called "konas" and the triangle is called "trikonas" ("tri" = three). For me, remembering "τρίγωνο" is very easy indeed!

[AntoineHel1]

Is τρεις used instead of τρία because γωνίες is a countable plural?

[Ros590790]

Yes

[kirakrakra]

No, or it is not the whole story: τρεις is the adjectiv three for a masc. or fem. Gr. noun, τρία if the noun is neutral (τρία βιβλία). The genitive is τριών for all.

τρία is the cardinal number three

[bonbayel]

All triangles have 3 angles, so in English in sentences like this 'A triangle' is more correct. Or am i getting dinged for using 3 instead of three? In math, the ciffers are preferred!