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平面截正方体
Author:
叶明杰
GeoGebra
New Resources
畫出對稱圖形
三位數除以一位數（二）
異分母分數減法
兩位數除以一位數（二）
錐體建築師
Discover Resources
五星形的頂角
http://www.qsir.org/?p=8853
Area of triangle using 0.5bs sinA
分水問題
圓周公式應用題2的副本
Discover Topics
Optimization Problems
Coordinates
Random Experiments
Quadratic Functions
Arithmetic Mean