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兩圓內外公切線
Author:
AlexWang
GeoGebra
New Resources
柱體建築師
兩位數除以一位數（一）
異分母分數減法
拼砌四邊形
球體建築師
Discover Resources
sample mean T test
ie 7
一元二次方程式-應用問題(兩圓相切-3)
圆锥的侧面展开图3D动画的副本
数线段
Discover Topics
Difference and Slope
Mathematics
Reflection
Stochastic Process or Random Process
Tangent Function