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公切線的條數
Author:
李春培
公切線的條數
GeoGebra
New Resources
拼砌四邊形
球体的体积推导（优化版）
三位數除以一位數（二）
異分母分數減法
兩位數加法
Discover Resources
Copy of 尋找等腰三角形 Isosceles Triangle Hunt
幾分之幾圓的弧線長度
Strike and Dip 地層的走向與傾角模擬
y=Asin(wx+f)图像变换
漂亮的摇摆曲线
Discover Topics
Vectors 2D (Two-Dimensional)
Trapezium
Geometry
Hyperbola
Normal Distribution