Last Updated
：2026/01/04
せいほうけい
Kanji
正方形
Noun
Japanese Meaning
正方形：四つの辺の長さがすべて等しく、四つの内角がすべて直角（90度）である四角形。正四角形、レギュラー・テトラゴンとも呼ばれる。
Easy Japanese Meaning
よつのへんがみなおなじながさで、よつのかどがきゅうじゅうどのしかくけい
Chinese (Simplified) Meaning
正方形 / 四条边相等且四个角为直角的平面图形 / 正四边形
Chinese (Traditional) Meaning
正方形 / 正四邊形
Korean Meaning
정사각형 / 네 변이 같고 네 각이 모두 직각인 평면도형
Vietnamese Meaning
hình vuông / tứ giác đều
Tagalog Meaning
parisukat / kuwadrado
Sense（1）
正方形: square, regular tetragon
（ romanization ）
Quizzes for review
See correct answer
せいほうけい
See correct answer
This paper is a perfect square.
See correct answer
この紙は完全なせいほうけいです。
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