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二つの正三角形

Author:Naofumi Horio

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平均変化率
カージオイド
接点の作る円は内接円
standingwave-reflection-fixed
小テスト

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回転行列
六角形の敷き詰め
円周角の定理逆のコピー
三平方の定理の証明
円錐(放物線の性質) (13 ３月 2020)

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Multiplication
Vectors
Circumcircle or Circumscribed Circle
Quadratic Functions
Trigonometry

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