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Author:
炫哥
GeoGebra
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球體建築師
算柱 (兩位數)
四邉形 (四年級) 教師版
兩位數除以一位數（一）
錐體建築師
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空間中平面
畢氏定理學生(楊知樾)
國旗(青天白日)
尺規作圖
多边形对角线
Discover Topics
Similar Triangles
Unit Circle
Frequency Distribution
Arithmetic Operations
Perimeter