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Projection
Author:
Jia-ming Shiu
Projection
GeoGebra
New Resources
兩位數加法
判斷球體
直角坐標平面上的旋轉變換
三位數除以一位數（一）
【案例】2013年安徽高考15题
Discover Resources
Pappus 定理
弧度
Copy of 七巧板綜合
畢氏定理拼圖007(8片)
快看漫画
Discover Topics
Natural Numbers
Logarithmic Functions
Indefinite Integral
Sine
Random Experiments