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test04繪本用
Author:
趙偉晉
GeoGebra
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近似值：有效數字
sanjiaohanshu
兩位數除以一位數（一）
異分母分數減法
畫出對稱圖形
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題四
透視
拼貼11939
欧拉线
高考椭圆题的动态演示1.许兴华数学
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Similarity Transformation or Similarity
Rectangle
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Line Segment
Coordinates