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Author:
戴選治
GeoGebra
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常见四边形是否是双心四边形
盈利與虧蝕
第八周作业2
折扣
异形操场
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斜射光三角量測
第一冊
圓內接正N邊形
雙曲線軌跡
C60足球模型(弧线)
Discover Topics
Difference and Slope
Curve Sketching
Frequency Distribution
Median Line
Derivative