Last Updated
：2025/12/21
正四面体
Hiragana
せいしめんたい
Noun
Japanese Meaning
正四面体：４つの合同な正三角形を面にもつ四面体。すべての辺の長さが等しく、すべての面が正三角形で構成される立体図形。
Easy Japanese Meaning
四つの三角の面があり、すべて同じ大きさと形の立体のこと
Chinese (Simplified)
四个面均为全等正三角形的四面体 / 所有棱等长、所有面全等的柏拉图立体
Sense（1）
regular tetrahedron
（ canonical ）
（ romanization ）
（ kyūjitai ）
（ hiragana ）
Quizzes for review
See correct answer
正四面体
See correct answer
He made a model of a regular tetrahedron.
See correct answer
彼は正四面体のモデルを作りました。
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