おうたかくけい
Noun
1.
concave polygon, non-convex polygon
geometry
Stroke 0 / 25
Speed1.0x
Track your mastery
Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.
Noun
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Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.