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gjh-e01-02 未知數邊長的長方形
Author:
Chia-Yen Tsai
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
錐體建築師
四邉形 (四年級) 教師版
找出對稱軸
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Copy of 畫三角形 題2c
編織圓
滾動的圓
滑桿動畫示範-3(畢氏定理)
拋物線1 焦點法
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Reflection
Surface
Diagrams
Intersection
Complex Numbers