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九点円の定理
Author:
Tetsuya Akazawa
GeoGebra
New Resources
カージオイド
平均変化率
正17角形 作図 regular 17-gon 2
サイクロイド
sine-wave
Discover Resources
y=ax^2の変化
Math Investigation-1
Nを通るシムソン線の作図
tcpr
マッハの本
Discover Topics
Incircle or Inscribed Circle
General Quadrilateral
Parallelogram
Tangent Line or Tangent
Arithmetic Mean