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类比探究（二）模块一旋转结构例2
Author:
万超杰
GeoGebra
New Resources
幾何作圖題：切三圓（題目）
Fibonacci Clock
近似值：有效數字
畫出對稱圖形
小数 的副本
Discover Resources
兩正弦波的合成波
Desargues 定理
旋轉動畫
limits
加法002结果(20以内)
Discover Topics
Vectors 2D (Two-Dimensional)
Polygons
Arithmetic
Quadrilaterals
Median Value