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正弦定理的证明的副本
Author:
王洪岩
,
梁航宇
GeoGebra
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【案例】2018年全国1卷理科12题
三位數除以一位數（一）
画直线等分三角形的面积
異分母分數減法
柱體建築師
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判斷球體 7
Copy of 韻01
讀磅 (練習)
拋物線軌跡
分物活動 1
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Differential Calculus
Mathematics
Quadrilaterals
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