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三角格紋
Author:
Lin Ching Chieh
GeoGebra
New Resources
第八周作业
畫出對稱圖形
算柱 (兩位數)
四邉形 (四年級) 教師版
Earth with coastline
Discover Resources
推移（y 方向）
f-10-2-poly3-gph-bac-2&3
線的面化
描点法画一次函数图像
翰林數學_2下_CH3-2_AAS全等性質
Discover Topics
Centroid or Barycenter
Median Line
Addition
Congruence
Perimeter