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菱形有甚麼特性?
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79847
GeoGebra
New Resources
第八周作业
双心四边形
球体的截面
椭圆内切圆链
常见四边形是否是双心四边形
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離心率與圓錐曲線
封閉區域填色
內外切圓性質
ABC 2
旋轉圓
Discover Topics
Terms
Step Functions
Intersection
Equilateral Triangles
Polygons