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一次及二次不等式
Author:
+x sir
Topic:
Inequalities
GeoGebra
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正方形雪花图案
第八周作业
常见四边形是否是双心四边形
平行線的判定
异形操场
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Compound Inequalities
求一數是另一數的幾分之幾?
滑桿動畫1
验证勾股定理
立體旋轉卡片
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Addition
Volume
Orthocenter
Set Theory
Percentages