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三角函數由來= =
Author:
陳柄何
GeoGebra
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GeoGebra笔记功能体验课件
找出對稱軸
柱體建築師
三位數除以一位數（二）
球體建築師
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藝術著色2
q5-9
折長方形 62326虹圻
「相似三角形」任务5的副本
探究平行四邊形面積
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Sphere
Piecewise Functions
Volume
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