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Author:
GaryLee
GeoGebra
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四邉形 (四年級) 教師版
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
柱體建築師
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三角形的三角和及外心、內心圓
kkklkl
Copy of 圖四
外心
tan(x) = x
Discover Topics
Cube
Congruence
Step Functions
Geometric Distribution
Coordinates