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Author:
johnmayhk
GeoGebra
New Resources
兩位數加法
柱體建築師
錐體建築師
判斷球體
兩位數除以一位數（二）
Discover Resources
AP的中點所形成的圖形
蕭宇珏的繪本
正弦定理的验证
圓錐曲線
活化斥引力 能 夫婦 給 蓄影
Discover Topics
Cone
Incircle or Inscribed Circle
Standard Deviation
Correlation
Parametric Curves