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正切函数图像
Author:
吕胜
GeoGebra
New Resources
第八周作业
【案例】2018年全国1卷理科12题
画直线等分三角形的面积
找出對稱軸
兩位數除以一位數（一）
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Incentre
Ex5C#14
畢氏定理-切割法
Angle of elevation and Angle of depression(仰角和俯角)
禪繞畫
Discover Topics
Rectangle
Centroid or Barycenter
Translation
Set Theory
Pie Chart or Circle Chart