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4S2 平面圖形的拼砌-等邊三角形
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lkkbmaths teachers 檔案儲存用
GeoGebra
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直角坐標平面上的旋轉變換
近似值：有效數字
小数 的副本
美國國旗 (Codex 版)
Fibonacci Clock
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平行線截等比例
軌跡觀察---兩圓上線段中點
Rotation
gjc099b34 找指定圓圓心
乘方
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Addition
Optimization Problems
Statistical Characteristics
Median Line
Multiplication