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相似三角形的邊長成比例
Author:
yuchengda
Topic:
Similar Triangles
相似三角形的邊長成比例
GeoGebra
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算柱 (兩位數)
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this is math pic
a為底之指數函數圖形
测试 = =
擲銀實驗
圆的平移（平移加滑桿）
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Vectors
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