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因數（1至24）
Author:
Tong Wing Hong
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
Area of rectangle
閱讀鐘面
八卦限
雙曲線1-焦點法
正方体的展开图（彩色3d版 net cube）
Discover Topics
Bar Chart or Bar Graph
Boxplot
Triangles
Interest Calculation
Incircle or Inscribed Circle