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ABC 1
Author:
yatan1018
GeoGebra
New Resources
畫出對稱圖形
異分母分數減法
三位數除以一位數（一）
算柱 (兩位數)
第八周作业
Discover Resources
探究正方體的截面
rotational symmetry_2
Sequence指令作圖-1
同位角---不平行綫
Binary Clock 二进制时钟
Discover Topics
Centroid or Barycenter
Statistics
Root
Solids or 3D Shapes
Reflection