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Equation of the tangent to 2 circles touching externally
Author:
jleung
GeoGebra
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兩位數加法
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
兩位數除以一位數（一）
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畢式定理 (09)
三角形重心
錯角練習
數學1
鉛筆畫圓
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Special Points
Cuboid
Hyperbola
Integral Calculus
Expected Value