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[几何] 证明图中\(BE=x\) 与 \(EC=y\) 有无穷多组解且恒有 \(AB:BE=2\) 和 \(ED=4\)

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TSC999 posted 2025-3-10 14:26 |Read mode
Last edited by TSC999 2025-3-11 09:17 证明有无穷多组解.png
上图中,\(AE\) 是角 \(A\) 的平分线, \(AE\) 的延长线交外接圆于  \(D\) 。
已知 \(AE=12,DB=DC=8\)。证明: ①\(BE=x\) 与 \(EC=y\) 有无穷多组解,且恒有 ② \(AB:BE=2\) 和 \(AC:EC=2\),即上图中的比例系数 \(t=2\)。③ \(ED=4\)。
下面是无穷多解中的三个例子。
三个例子.png


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original poster TSC999 posted 2025-3-11 20:48
证明ED等于4.png

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original poster TSC999 posted 2025-3-12 08:40
Last edited by TSC999 2025-3-13 18:55下面是一个更简单的证明,是智慧助手豆包给出的:
豆包证明.png

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