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ie 7
Author:
LAM YU SANG
GeoGebra
New Resources
畫出對稱圖形
兩位數加法
三位數除以一位數（一）
拼砌四邊形
球体的体积推导（优化版）
Discover Resources
waaachen
對數的遞增或遞減(底數小於1)
鏡射矩陣
三角形ㄛ
鉛筆畫圓
Discover Topics
Curve Sketching
Translation
Geometric Transformations
Conditional Probability
Planes