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waaachen

Author:陳兪宏

奕程老師的幾何問題

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異分母分數減法
兩位數除以一位數（一）
兩組對邊相等的四邊形
判斷球體
画直线等分三角形的面积

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Light Game
極線獨立定理 / polar independence theorem
Escher 階梯
簡單動畫
三角形外心的角度關係

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Exponent
Curve Sketching
Triangles
Secant Line or Secant
Solids or 3D Shapes

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