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Author:
石川英樹
GeoGebra
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二次曲線と離心率
対数螺旋
接点の作る円は内接円
standingwave-reflection
サイクロイド
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平行弦の定理
垂足円の拡張
三次方程式の根
相似確認（放物線）
ベクトル場
Discover Topics
Rhombus
Sequences and Series
Trigonometric Functions
Pythagoras or Pythagorean Theorem
Statistical Characteristics