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Japanese vocabulary · Beginner
How do you say "triangle" in Japanese?
三角形
sankakukei
In Japanese, "triangle" is 三角形 (sankakukei).
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Pronunciation
Sahn-kah-koo-kay, four syllables where 'san' means three — say it with light even stress across each beat.
Writing and usage
三角形 is written using kanji. It's a noun, and this word is also taught inside the Noun Town language learning game, where it appears in interactive lessons alongside hundreds of other everyday words.
Example sentence
三角形は三辺があります。
sankakukei ha san hen gaarimasu.
A triangle has three sides.
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How to remember 三角形
Sankakukei starts with 'san' (three) — a triangle is simply the 'three-corner shape', spelled out plainly.
Related words
- circle 円 en
- rectangle 長方形 chouhoukei
- diamond ダイヤモンド daiyamondo
- oval 楕円形 daenkei
- hexagon 六角形 rokkakkei
- pentagon ペンタゴン pentagon
- cube 立方体 rippoutai
- sphere 球面 kyuumen
- cylinder シリンダー shirindaa
Browse all Japanese words in the glossary.
Questions about 三角形
How do you pronounce 三角形?
Sahn-kah-koo-kay, four syllables where 'san' means three — say it with light even stress across each beat.
Is 三角形 formal or casual?
三角形 is a neutral, everyday word that works in both casual and polite speech. The level of formality comes from the sentence structure around it, not from the word itself.
How is 三角形 written in Japanese?
三角形 is written using kanji. Romanised, it reads as sankakukei.
Where can I practice Japanese words for free?
You can play free Japanese minigames in your browser on the Noun Town online games page, with no sign-up needed. Every word in the Japanese glossary also has native audio and an example sentence you can revisit any time.
"Triangle" in other languages
Curated by Jack Ratcliffe
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