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波的干涉 Wave Interference
Author:
W.L. Wong, Albert
GeoGebra
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第八周作业
兩位數除以一位數（二）
錐體建築師
找出對稱軸
兩組對邊相等的四邊形
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z=x^2-y^2
lab5_task3
二次函數（第四階段）
題6
畫三角形 題1a 的複本
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Parabola
Means
Exponent
Plane Figures or Shapes
Volume