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三角形內部一點到三頂點距離和最小
Author:
連琨銘
GeoGebra
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镂空正方体案例对比
异形操场
平行線的判定
折扣
椭圆内切圆链
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三圓相切
Copy of 七巧板綜合
數學傳播39卷4期, 平面幾何公式思考
線性規劃
三角形的心
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Statistics
Surface
Percentages
Correlation
Polygons