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Author:
5LaaLi
GeoGebra
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常见四边形是否是双心四边形
平行線的判定
撒针估算面积实验
百分數及其應用
椭圆内切圆链
Discover Resources
三角形的工具
比較角的大小三
Cycloid
保持2:3:4
分割多边形
Discover Topics
Prism
Algebra
Cylinder
Quadrilaterals
Perimeter