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楕円の軌跡（シミレーション）
Author:
永野 敦子
GeoGebra
New Resources
小テスト
standingwave-reflection
二次曲線と離心率
直線の軌跡
目で見る立方体の2等分
Discover Resources
リング
tennjyoukannsuu's (mine!)
multilateral
三角形の内心
円の拡大縮小
Discover Topics
Kite
Circumcircle or Circumscribed Circle
Rational Numbers
Mode
Arithmetic