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4.6兩角和與差的正弦、餘弦、正切二
Author:
user9429
GeoGebra
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三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
畫出對稱圖形
柱體建築師
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四則運算
Fractal Spirograph (Fractal Roulette)
面積
gjh-g03-00 和的平方公式
【高中物理】斜面上物体受力立体图2.0
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Sphere
Power Functions
Geometry
Cone
Logarithmic Functions