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保持比例
Author:
hjyanghj
Topic:
Geometry
GeoGebra
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三位數除以一位數（二）
畫出對稱圖形
四邉形 (四年級) 教師版
找出對稱軸
球體建築師
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平行四邊形面積教材三
pentagon
相似形_Tasks_Collection
四邊形層疊
正方形推垛
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Addition
Orthocenter
Trigonometry
Function Graph
Surface