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Author:
李伶芳
GeoGebra
New Resources
sanjiaohanshu
畫出對稱圖形
判斷球體
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
Discover Resources
角平分線
柱體建築師 4
参数曲线
sinx & cscx
畫鐘面的副本
Discover Topics
Sine
Combinatorics
Conic Sections
Root
Inequalities