Last Updated
：2025/12/07
三角定規
Hiragana
さんかくじょうぎ
Noun
Japanese Meaning
三角形でできた定規の一種で、主に製図や数学の作図などで直角や特定の角度（45度、30度・60度など）を正確に描くために用いる道具。一般に「三角定規」といえば、これらの三角形の定規の総称を指す。
Easy Japanese Meaning
さんかくのかたちをしたじょうぎで、長さをはかったり、まっすぐな線や角をかくどうぐ
Sense（1）
a set square; a triangle
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
See correct answer
三角定規
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He was drawing a figure using a set square.
See correct answer
彼は三角定規を使って図形を描いていました。
Japanese - English
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