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Triangle_6_Q
Author:
ralphchen
GeoGebra
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折扣
斜率的值
正方形雪花图案
平行線的斜率
垂直線的斜率
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格子點問題
九點圓
二元一次不等式的解
圆的面积展开的副本
畢氏定理圖證01
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Distributions
Sine
Dilation
Orthocenter
Optimization Problems