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three
Author:
Jia-ming Shiu
three
GeoGebra
New Resources
畫出對稱圖形
判斷球體
三位數除以一位數（二）
四邊形的特性
拼砌四邊形
Discover Resources
方格紙上畫長方形2
有向數
弦心距比較
長方形和正方形的面積_題F
动态展开圆柱体
Discover Topics
Secant Line or Secant
Straight Lines
Planes
Root
Quadratic Functions