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正四面體
Author:
lamanleung
GeoGebra
New Resources
三位數除以一位數（一）
画直线等分三角形的面积
兩位數加法
四邊形的特性
找出對稱軸
Discover Resources
天干與地支
n 次方根
鏡射矩陣
工作紙題1
少了一個質數One less prime number
Discover Topics
Arithmetic
Similar Triangles
Special Points
Normal Distribution
Boxplot