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旋轉正方形
Author:
33陳郁婷
GeoGebra
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四邉形 (四年級) 教師版
柱體建築師
兩組對邊相等和有直角的四邊形
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
生活中的平面圖形關係─垂直
圓內接四邊形任務二
畢氏定理完成20170330
例题1
翰林數學_2下_CH4-3_四邊形的種類
Discover Topics
Exponential Functions
Plane Figures or Shapes
Fractions
Conic Sections
Trigonometry