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Author:
侯孟宏
GeoGebra
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拼砌四邊形
兩組對邊相等和有直角的四邊形
三位數除以一位數(二)
畫出對稱圖形
兩位數除以一位數(二)
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K9@cn
利用邊對摺找三角形的內心
Example 2
边长可变的正三角形上莱洛转子的滚动
图中的三角形面积何时最小?(许兴华数学)
Discover Topics
Vectors 2D (Two-Dimensional)
Special Points
Linear Equations
Exponential Functions
Numbers