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畢氏定理的副本
Author:
xiafuhua
,
羅驥韡 (Pegasus Roe)
畢氏定理證明
GeoGebra
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兩組對邊相等的四邊形
【案例】2013年安徽高考15题
異分母分數減法
第八周作业
球體建築師
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平行四邊形對角線
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
圖形的繪製(8)---圖形的搬移(畢氏定理)
面積 題目4
正方形與圓中點軌跡(1060724)
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Special Points
Quadratic Equations
Quadratic Functions
Linear Equations
Correlation