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同心圓
Author:
何姵葶
GeoGebra
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異分母分數減法
兩位數除以一位數（二）
第八周作业
三位數除以一位數（一）
拼砌四邊形
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test
動態正方形(未完成)
數學傳播39卷4期, 平面幾何公式思考
外心
周界-平移法(練習三)
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Terms
Optimization Problems
Sphere
Differential Equation
Trigonometry