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Apollonius Problem kissing coin problem
Author:
tkyggb
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（二）
兩位數加法
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
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Simple Interest 單利息
平方根
同心圓內的直線2
纏繞
Copy of fluid mechanics
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Perimeter
Trigonometric Functions
Power Functions
Random Experiments
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