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Author:
军云
GeoGebra
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撒针估算面积实验
常见四边形是否是双心四边形
科赫雪花
圓的基本性質
第八周作业1
Discover Resources
动态三角形
P6 圓周03D
襯墊
七巧板
angle between 2 planes 01
Discover Topics
Numbers
Triangles
Natural Numbers
Parabola
Optimization Problems