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（使用）中三円周角と中心角p160
Author:
上野隆太郎
GeoGebra
New Resources
正１７角形 作図 regular 17-gon 2
サイクロイド
二次曲線と離心率
接点の作る円は内接円
斜めドップラー
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傍九点
y=ax^2の焦点
夏期講習２０番（２）
F3 y=x+a y=6/x-a
continued fraction approximation to pi
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Triangles
Inequalities
Quadratic Equations
Plane Figures or Shapes
Scalene Triangles