在平行四边形ABCD中,对角线AC、BD交与点O,BE平分角ABC的外角,且AE垂直于BE.求证:OE=1/2(AB+BC)
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![在平行四边形ABCD中,对角线AC、BD交与点O,BE平分角ABC的外角,且AE垂直于BE.求证:OE=1/2(AB+BC)](/uploads/image/z/11633121-9-1.jpg?t=%E5%9C%A8%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2C%E5%AF%B9%E8%A7%92%E7%BA%BFAC%E3%80%81BD%E4%BA%A4%E4%B8%8E%E7%82%B9O%2CBE%E5%B9%B3%E5%88%86%E8%A7%92ABC%E7%9A%84%E5%A4%96%E8%A7%92%2C%E4%B8%94AE%E5%9E%82%E7%9B%B4%E4%BA%8EBE.%E6%B1%82%E8%AF%81%EF%BC%9AOE%3D1%2F2%EF%BC%88AB%2BBC%EF%BC%89)
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