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proof92吳冠穎
Author:
郭亮偉
GeoGebra
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画直线等分三角形的面积
異分母分數減法
第八周作业
兩位數除以一位數（一）
四邊形的特性
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商高定理1
Angle between a Line and a Plane
同心圓
旁心
認識半徑
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Means
Cube
Surface
Linear Regression
Sine