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到正四面體頂點的平方和
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
找出對稱軸
拼砌四邊形
畫出對稱圖形
兩位數加法
兩位數除以一位數（二）
Discover Resources
行星運動
轉彎的箭頭
科技化數學教學應用X腳踏車自造課程in彰師大(2018)
圓外角測試
手拉手模型
Discover Topics
Square
Median Line
LCM and GCD
Rotation
Triangles