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包絡線
Author:
hou yi ting
孢落限
GeoGebra
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兩組對邊相等的四邊形
四邉形 (四年級) 教師版
兩位數加法
四邊形的特性
兩組對邊相等和有直角的四邊形
Discover Resources
旋轉體：Washer Method
正方形
平移動畫(平移加滑桿)
最小周長
Copy of 分數與小數
Discover Topics
Sphere
Algebra
Linear Functions
Mode
Distributions