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Author:
黄旭
Topic:
Geometry
GeoGebra
New Resources
撒针估算面积实验
常见四边形是否是双心四边形
双心四边形
椭圆内切圆链
第八周作业
Discover Resources
圓錐曲線
Hoehn's Theorem
Net of pyramid
homework3
z20联盟数学考试第七题
Discover Topics
Special Points
Scalene Triangles
Tangent Line or Tangent
Incircle or Inscribed Circle
Frequency Distribution