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Author:
youzhen shih
GeoGebra
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找出對稱軸
兩位數除以一位數（一）
三位數除以一位數（一）
算柱 (兩位數)
第八周作业
Discover Resources
正弦函数图象的形成
兩正方形重疊的形狀(配合習作40頁)
Copy of 方格紙上畫四邊形
完全图及其变形
分數乘法
Discover Topics
Cone
Vectors 2D (Two-Dimensional)
Vectors
Constructions
Incircle or Inscribed Circle