Last Updated
：2025/12/24
とつめん
Kanji
凸面
Noun
Japanese Meaning
凸状になった面。また、外側にふくらんだ面。 / 幾何学において、任意の2点を結ぶ線分が常にその内部または境界上にある性質をもつ図形の外側の面。
Easy Japanese Meaning
まわりよりふくらんでいて、外がわにまるく出ているめんのこと
Chinese (Simplified)
外凸的面 / 向外弯曲的表面 / 凸起的区域
Sense（1）
凸面: convex area
（ romanization ）
Quizzes for review
See correct answer
This mirror has a convex shape.
See correct answer
この鏡はとつめんの形状をしています。
Japanese - English
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