Help Me```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1
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HelpMe```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1HelpMe```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交
Help Me```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1
Help Me```初3.
四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1
Help Me```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1
连接AC交BD于O.在三角形ABC中AM与BO的交点是三角形的重心.所以BP:PO=2:1.所以BP=2/3OB=1/3DB.所以PD:BP=2:1
Help Me```初3.四边形ABCD(其实是平行四边形)中,M是BC中点,BD交AM于点P,求证:PD:BP=2:1
如图,在四边形ABCD中,AB>CD.E,F分别是对角线BD、AC的中点,求证:2分之1(AB+CD)>EF.help me
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