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quiz 9.1 2(d)
Author:
lamanleung
GeoGebra
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兩組對邊相等的四邊形
【案例】圆柱体内放置一个大球六个小球
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
四邊形的特性
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Pyramid
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