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円（おうぎ形）の面積
Author:
斎藤 幸弘
,
hase3desu
Topic:
Circle
GeoGebra
New Resources
円の伸開線
standingwave-reflection-fixed
コイン投げと樹形図
フーリエ級数展開
standingwave-reflection
Discover Resources
Ex_71
Export image formats
ヘロンの公式
点の直線運動で動く円を描く
standingwave-reflection-free
Discover Topics
Means
Surface
Quadrilaterals
Vectors
Unit Circle