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三角形的四心
Author:
19留家炫
GeoGebra
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找出對稱軸
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
判斷球體
【案例】2013年安徽高考15题
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三角形內切三圓
中心对称的概念
學習活動六線性規劃
直角坐標的旋轉變換
Copy of 折扣 例5
Discover Topics
Hypothesis Testing
Arithmetic
Conditional Probability
Normal Distribution
Reflection