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量角器
Author:
purespirit0301
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（二）
兩位數加法
画直线等分三角形的面积
畫出對稱圖形
Discover Resources
二元一次方程式 1
Why same areas?
拋物線與光線反射
sequence-circle
線的面化
Discover Topics
Translation
Set Theory
Mathematics
Correlation
Matrices