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Author:
iedc
GeoGebra
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第三周作业效果演示
常见四边形是否是双心四边形
椭圆内切圆链
球体的截面
第八周作业2
Discover Resources
proof SSS
棒形圖(我最喜愛的科目)
Angle between Line and Plane
線段比較大小-01
多边形对角线
Discover Topics
Quadratic Equations
Polynomial Functions
Logarithm
Trigonometry
Intersection