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三圓外切
Author:
AlexWang
GeoGebra
New Resources
撒针估算面积实验
三角函数 的副本
讀磅
漂亮的摇摆曲线
斜率的值
Discover Resources
三角形
包含除法（1 ÷分數）
circle1
Diagram 1
圓外冪性質
Discover Topics
Logarithmic Functions
Geometry
Random Experiments
Difference and Slope
Subtraction