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Apollonius Problem poncelet fouche
Author:
tkyggb
GeoGebra
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【案例】2013年安徽高考15题
兩位數除以一位數(一)
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等的四邊形
画直线等分三角形的面积
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挑战中考压轴题1.1.3
分數與小數
Ambiguous Cylinder illusion
正方形周界
两圆上两动点分别以相同的线速度运动时,连线中点的轨迹(绿色花朵)
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Perimeter
Means
LCM and GCD
Real Numbers
Parallelogram