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PTCCS2new2
Author:
Cheung Wing Chuen
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數除以一位數（一）
近似值：有效數字
柱體建築師
Discover Resources
滚动的硬币
Area of cirle
比較角的大小(直接比較)
学习资源介绍
圓的基本性質
Discover Topics
Logarithm
Diagrams
Curve Sketching
Triangles
Statistical Characteristics