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円（おうぎ形）の面積
Author:
斎藤 幸弘
,
hase3desu
Topic:
Circle
GeoGebra
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sine-wave
等積変形2
サイクロイド
standingwave
standingwave-reflection-fixed
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Monty Hall Dilemma
フラクタル1000
ベクトルの引き算
空間ベクトルNo.6例１
三角形の重心
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Derivative
Cuboid
Means
Intersection
Matrices