【几何】【关于截长补短】1、如图,已知:在四边形ABCD中,AB∥CD,BE平分∠ABC,AB+CD=BC.求证:CE平分∠BCD2、如图,已知:在四边形ABCD中,AB=BC=AD=CD,且∠BAD=∠B=∠C=∠D=90°,M是DC的中点,∠BAE=2∠DAM.求证
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![【几何】【关于截长补短】1、如图,已知:在四边形ABCD中,AB∥CD,BE平分∠ABC,AB+CD=BC.求证:CE平分∠BCD2、如图,已知:在四边形ABCD中,AB=BC=AD=CD,且∠BAD=∠B=∠C=∠D=90°,M是DC的中点,∠BAE=2∠DAM.求证](/uploads/image/z/10895971-67-1.jpg?t=%E3%80%90%E5%87%A0%E4%BD%95%E3%80%91%E3%80%90%E5%85%B3%E4%BA%8E%E6%88%AA%E9%95%BF%E8%A1%A5%E7%9F%AD%E3%80%911%E3%80%81%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%EF%BC%9A%E5%9C%A8%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%E2%88%A5CD%2CBE%E5%B9%B3%E5%88%86%E2%88%A0ABC%2CAB%2BCD%3DBC.%E6%B1%82%E8%AF%81%EF%BC%9ACE%E5%B9%B3%E5%88%86%E2%88%A0BCD2%E3%80%81%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%EF%BC%9A%E5%9C%A8%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%3DBC%3DAD%3DCD%2C%E4%B8%94%E2%88%A0BAD%3D%E2%88%A0B%3D%E2%88%A0C%3D%E2%88%A0D%3D90%C2%B0%2CM%E6%98%AFDC%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E2%88%A0BAE%3D2%E2%88%A0DAM.%E6%B1%82%E8%AF%81)
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