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幾何明珠2-5
Author:
bigbirdjack
GeoGebra
New Resources
折扣
第八周作业
常见四边形是否是双心四边形
双心四边形
盈利與虧蝕
Discover Resources
基測試題五邊形滾動
方塊圖_李樂雯
Copy of 十字交乘法
七巧板（tangram）的副本
Copy of 分數加法
Discover Topics
Dilation
Means
Symmetry
Incircle or Inscribed Circle
Statistics