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幾何明珠2-4
Author:
bigbirdjack
GeoGebra
New Resources
双心四边形
异形操场
比較五件物件的重量
圓的基本性質
科氏力 (Coriolis Force)
Discover Resources
Angle at Centre
數字的加減數線表示
two-example
Graph of Trigonometry
二面角的夹角
Discover Topics
Perimeter
Distributions
Ellipse
Mathematics
Derivative