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Perpendicular lines

Author:Ng KC

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第八周作业
畫出對稱圖形
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
【案例】圆柱体内放置一个大球六个小球

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正五角柱
两平面夹角1
劉徽的「割圓術」
雙重積分：Double Integral
正餘弦函數的疊合

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Quadratic Equations
Circumcircle or Circumscribed Circle
Rhombus
Algebra
Poisson Distribution

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