Last Updated
：2025/12/07
十八角形
Hiragana
じゅうはちかっけい / じゅうはっかっけい
Noun
Japanese Meaning
多角形の一種で、18個の角（頂点）と18本の辺をもつ図形。
Easy Japanese Meaning
十八このかどをもつ、たしかくにちかいかたち。はこのふたやもんどころなどのかたち。
Sense（1）
a octadecagon
（ canonical ）
（ romanization ）
（ hiragana ）
（ alternative ）
（ Rōmaji ）
（ alternative ）
（ Rōmaji ）
（ alternative ）
（ Rōmaji ）
Quizzes for review
See correct answer
He drew an octadecagon shape.
See correct answer
彼は十八角形の図形を描きました。
Japanese - English
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