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Author:
石川英樹
GeoGebra
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二次曲線と離心率
正１７角形 作図 regular 17-gon 2
接点の作る円は内接円
サイクロイド
斜めドップラー
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一葉双曲面，円錐面，二葉双曲面
GeoCon Problem 4.12 (Line and circle tangent (case II))
軌跡
円の接線の直極点の軌跡
双曲線の性質
Discover Topics
Plane Figures or Shapes
Geometric Mean
Tangent Function
Quadrilaterals
Curve Sketching