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平行線截等比例
Author:
周桂名
平行線截等比例
GeoGebra
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四邉形 (四年級) 教師版
三位數除以一位數（二）
四邊形的特性
畫出對稱圖形
兩組對邊相等的四邊形
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調整頂點位置,對函數是的影響
Task 5: Regular Hexagon
XY 圖線段長度計算
圓例9
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Mathematics
Sequences and Series
Parametric Curves
Geometric Mean
Functions