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生日问题1
Author:
徐晓东
GeoGebra
New Resources
三角函数 的副本
正方形雪花图案
科氏力 (Coriolis Force)
折扣
平行線的判定
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三節棍的軌跡
Apollonius Problem 3 LLP 3
Locus: Equidistance From Two Intersecting Lines
軌跡觀察---三同心圓上的三角形重心軌跡
三个角只有一个角度数变1
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Cuboid
Trigonometric Functions
Addition
Dilation
Probability