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proof*5 張華炘
Author:
郭亮偉
GeoGebra
New Resources
异形操场
第八周作业2
盈利與虧蝕
第八周作业3
椭圆内切圆链
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parallelogram
一元二次方程式-應用問題(兩圓相切-2)
五複合正六面體
畢氏定理-切割法
我的第一个GGB绘本
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Sequences and Series
Special Points
Histogram
Real Numbers
Distributions