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标题: [数学] 请高手帮忙啦 [打印本页]

作者: 哈哈爸 时间: 2009-5-1 18:09 标题: 请高手帮忙啦

请哪位高手帮忙解题，没有答案。

4ABCD is a quadrilateral.rar (6.61 KB) .

附件: 4ABCD is a quadrilateral.rar (2009-5-1 18:09, 6.61 KB) / 该附件被下载次数 61
http://ww123.net/attachment.php?aid=298135

作者: greenjyz 时间: 2009-5-1 21:13 标题: 回复 1#哈哈爸的帖子

My son did it, and I have not yet verified:

756.

Clue: to extend AB and DE to meet at F..

作者: GerryBB 时间: 2009-5-1 21:32

W e too.

Clue 2: extend DA and CB to meet at H

作者: greenjyz 时间: 2009-5-1 21:57 标题: 回复 3#GerryBB 的帖子

EEEEEEExcellent ! Simpler and clearer solution !

作者: 哈哈爸 时间: 2009-5-2 01:05

GOOD WORK. THANKS LOT..

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