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S2
Author:
杨华
GeoGebra
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第三周作业效果演示
椭圆内切圆链
盈利與虧蝕
平行線的判定
科赫雪花
Discover Resources
圓與三角形的中點軌跡
折線軌跡
三角函數的繪圖1
justin0704
二次函数y=a(x-h)^2+k各参数性质
Discover Topics
Geometric Transformations
Division
Trigonometry
Numbers
Rectangle