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Author:
junfeilx
GeoGebra
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拼砌四邊形
判斷球體
三位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
Discover Resources
阿基米德(5,6,6)
小二三 畫時鐘
優良作品3
三心
coterminal angles
Discover Topics
Parametric Curves
Trigonometric Functions
Differential Equation
Geometric Mean
Equations