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平行四边形的面积公式推导
Author:
海清
GeoGebra
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第八周作业1
圓的切線方程
第三周作业效果演示
正方形雪花图案
盈利與虧蝕
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方格紙上畫正方形4
優良作品1
線型函數
線性規劃例7
典斜式2 施云淇09
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Similar Triangles
Derivative
LCM and GCD
Probability
Parallelogram