初二平行四边形的性质问题1、在平行四边形ABCD中,AB≠AD,AC,BD相交于O,OE⊥BD交AD于E,求证:OB平分∠CBE.2、在平行四边形ABCD中,∠BCD的平分线CE交AD于E,∠ABC的平分线BG交CE于F,交AD于G.①求证 BG⊥CE ②
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![初二平行四边形的性质问题1、在平行四边形ABCD中,AB≠AD,AC,BD相交于O,OE⊥BD交AD于E,求证:OB平分∠CBE.2、在平行四边形ABCD中,∠BCD的平分线CE交AD于E,∠ABC的平分线BG交CE于F,交AD于G.①求证 BG⊥CE ②](/uploads/image/z/1611265-49-5.jpg?t=%E5%88%9D%E4%BA%8C%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2%E7%9A%84%E6%80%A7%E8%B4%A8%E9%97%AE%E9%A2%981%E3%80%81%E5%9C%A8%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%E2%89%A0AD%2CAC%2CBD%E7%9B%B8%E4%BA%A4%E4%BA%8EO%2COE%E2%8A%A5BD%E4%BA%A4AD%E4%BA%8EE%2C%E6%B1%82%E8%AF%81%3AOB%E5%B9%B3%E5%88%86%E2%88%A0CBE.2%E3%80%81%E5%9C%A8%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2C%E2%88%A0BCD%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BFCE%E4%BA%A4AD%E4%BA%8EE%2C%E2%88%A0ABC%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BFBG%E4%BA%A4CE%E4%BA%8EF%2C%E4%BA%A4AD%E4%BA%8EG.%E2%91%A0%E6%B1%82%E8%AF%81+BG%E2%8A%A5CE+%E2%91%A1)
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