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Author:
philiplui
GeoGebra
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垂直線的斜率
平行線的斜率
【案例】2013年安徽高考15题
漂亮的摇摆曲线
双心四边形
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有趣的軌跡圖
[問題] 橢圓兩焦點 (6,0), (0,8)
內心
同心圓
[洋葱] 四边形与旋转变换
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Pie Chart or Circle Chart
Binomial Distribution
Probability
Random Experiments
Multiplication