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线面垂直
Author:
少平 朱
GeoGebra
New Resources
比較五件物件的重量
正方形雪花图案
双心四边形
盈利與虧蝕
龙形曲线-分形龙2
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PMC 2014-15 Q1
判斷線型函數y=f(x)=ax+b的b值(隨機出題)
面積認識
試算表的很多正方形
腾讯网
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Translation
Probability
Difference and Slope
Median Value
Perimeter