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中考2019北京—24
Author:
宋晓燕
GeoGebra
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四邊形的特性
算柱 (兩位數)
拼砌四邊形
【案例】2018年全国1卷理科12题
柱體建築師
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平行四邊形
畢式定理 (07)
Copy of 可01
金惠吉：正弦交流电演示
小数 的副本
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Cuboid
Derivative
Vectors 3D (Three-Dimensional)
Hyperbola
Variance