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tan900

Author:tan90

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異分母分數減法
兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
算柱 (兩位數)
【案例】2018年全国1卷理科12题

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伸縮變換
上傳檔案測試
hkdse 2014 by mr lo wy
橢圓3--平行四邊形法
两角差的正弦公式证明2

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Surface
Triangles
Parabola
Cosine
Vectors 3D (Three-Dimensional)

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