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triDyn
Author:
dxdcn
GeoGebra
New Resources
空间中两直线的位置关系
漂亮的摇摆曲线
兩位數加法
球体的体积推导（优化版）
【案例】2013年安徽高考15题
Discover Resources
Copy of 固定周界的長方形的面積變化
兩圓動點中點軌跡
題 2
Copy of 畢氏樹
榔头和它的展开图
Discover Topics
Reflection
Congruence
Root
Pythagoras or Pythagorean Theorem
Logic