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Author:
kevin20020905
GeoGebra
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柱體建築師
【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
拼砌四邊形
第八周作业
Discover Resources
凸透鏡成像
f(x) and f(-x)
http://www.qsir.org/?p=8853
滾球平台
Rotational Symmetry的副本
Discover Topics
Linear Programming or Linear Optimization
Parallelogram
Logarithm
Straight Lines
Arithmetic