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GeoGebra
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兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
拼砌四邊形
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winter vacation homework 6
Similar triangles inscribed iteration400
工作紙-整數乘以真分數
Copy of glt-h02-00-正方形折成三角錐
求公切線段長