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未命名
Author:
xuhao
GeoGebra
New Resources
第八周作业
拼砌四邊形
三位數除以一位數（二）
柱體建築師
兩位數除以一位數（一）
Discover Resources
等腰，角度关系
圖四
動態角=30
正方體交角
孔明棋
Discover Topics
Normal Distribution
Polygons
Natural Numbers
Upper and Lower Sum or Riemann Sum
Trapezoid