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Author:
清綺楊
GeoGebra
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兩組對邊相等和有直角的四邊形
異分母分數減法
四邉形 (四年級) 教師版
四邊形的特性
找出對稱軸
Discover Resources
異分母的分數加減
內心
demo
Rotation of line
根據百分率找數量(二): 例4的副本
Discover Topics
Percentages
Mathematics
Complex Numbers
Plane Figures or Shapes
Polynomial Functions