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Author:
Lin Ching Chieh
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
【案例】2013年安徽高考15题
兩位數除以一位數（二）
判斷球體
Discover Resources
Nets of a square pyramid
黎曼和
Measuring Volume 5
小棒
正方体展开图的副本
Discover Topics
Logarithm
Optimization Problems
Coordinates
Arithmetic Mean
Trigonometry