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Equation of the tangent to 2 circles touching externally
Author:
jleung
GeoGebra
New Resources
球体的体积推导（优化版）
判斷球體
兩位數除以一位數（一）
兩位數加法
兩組對邊相等和有直角的四邊形
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二元一次方程式
偏心的農夫?
平行線法
等高
模擬隨機變數的「總和」的副本
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Geometry
Stochastic Process or Random Process
Constructions
Surface
Secant Line or Secant