求初三数奥题答案!1、已知直线上依次有7个点P1、P2、P3、P4、P5、P6、P7,设P点为这条直线上任一点,PP1+PP2+……+PP7=m,则当点P在( )是,m的值最小.A、P1P7的中点 B、P2P6的中点 C、P3P5的中点
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![求初三数奥题答案!1、已知直线上依次有7个点P1、P2、P3、P4、P5、P6、P7,设P点为这条直线上任一点,PP1+PP2+……+PP7=m,则当点P在( )是,m的值最小.A、P1P7的中点 B、P2P6的中点 C、P3P5的中点](/uploads/image/z/14443188-60-8.jpg?t=%E6%B1%82%E5%88%9D%E4%B8%89%E6%95%B0%E5%A5%A5%E9%A2%98%E7%AD%94%E6%A1%88%211%E3%80%81%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BF%E4%B8%8A%E4%BE%9D%E6%AC%A1%E6%9C%897%E4%B8%AA%E7%82%B9P1%E3%80%81P2%E3%80%81P3%E3%80%81P4%E3%80%81P5%E3%80%81P6%E3%80%81P7%2C%E8%AE%BEP%E7%82%B9%E4%B8%BA%E8%BF%99%E6%9D%A1%E7%9B%B4%E7%BA%BF%E4%B8%8A%E4%BB%BB%E4%B8%80%E7%82%B9%2CPP1%2BPP2%2B%E2%80%A6%E2%80%A6%2BPP7%3Dm%2C%E5%88%99%E5%BD%93%E7%82%B9P%E5%9C%A8%EF%BC%88++%EF%BC%89%E6%98%AF%2Cm%E7%9A%84%E5%80%BC%E6%9C%80%E5%B0%8F.A%E3%80%81P1P7%E7%9A%84%E4%B8%AD%E7%82%B9++++++B%E3%80%81P2P6%E7%9A%84%E4%B8%AD%E7%82%B9+++++C%E3%80%81P3P5%E7%9A%84%E4%B8%AD%E7%82%B9)
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