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龍騰4_1-1習6-1
Author:
廖傑成
GeoGebra
New Resources
柱體建築師
錐體建築師
兩位數加法
三位數除以一位數（二）
球體建築師
Discover Resources
waaachen
smps perimeter
Christmas Tree
未命名圆锥的副本
尺规作图得到黄金三角形和黄金矩形
Discover Topics
Incircle or Inscribed Circle
Linear Programming or Linear Optimization
Parabola
Random Variables
Coordinates