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Pappus Chain
Author:
李俊儀
GeoGebra
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兩組對邊相等的四邊形
第八周作业
【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
異分母分數減法
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三角形重心
軌道
題一
Pyth2LK
正N边形在圆内的滚动
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Continuity
Circle
Percentages
Equations
Probability