What does 三角形 mean?
三角形 is a Japanese noun meaning “triangle” in English. It is written as 三角形 in kanji, さんかくけい in hiragana, and sankakukei in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
「三角形」を定義するのは難しいです。
It is hard to define "triangle."