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Author:
王福生
GeoGebra
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科氏力 (Coriolis Force)
圓的基本性質
双心四边形
常见四边形是否是双心四边形
第三周作业效果演示
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Apollonius Problem poncelet fouche
初心者的進化
同頂角_1
(004)80201辛宇婕
Copy of 閱讀鐘面及數字鐘（時和分）
Discover Topics
Conic Sections
Reflection
Random Experiments
Optimization Problems
Tree Diagrams