急在△ABC中,AD是∠A的外角平分线,P是AD上异于A的任意一点,请说明PB+PC与AB+AC的大小关在△ABC中,AD是∠A的外角平分线,P是AD上异于A的任意一点,请说明PB+PC与AB+AC的大小关系并写出证明过程.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 07:52:56
![急在△ABC中,AD是∠A的外角平分线,P是AD上异于A的任意一点,请说明PB+PC与AB+AC的大小关在△ABC中,AD是∠A的外角平分线,P是AD上异于A的任意一点,请说明PB+PC与AB+AC的大小关系并写出证明过程.](/uploads/image/z/2780079-15-9.jpg?t=%E6%80%A5%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2CAD%E6%98%AF%E2%88%A0A%E7%9A%84%E5%A4%96%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%2CP%E6%98%AFAD%E4%B8%8A%E5%BC%82%E4%BA%8EA%E7%9A%84%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2C%E8%AF%B7%E8%AF%B4%E6%98%8EPB%2BPC%E4%B8%8EAB%2BAC%E7%9A%84%E5%A4%A7%E5%B0%8F%E5%85%B3%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2CAD%E6%98%AF%E2%88%A0A%E7%9A%84%E5%A4%96%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%2CP%E6%98%AFAD%E4%B8%8A%E5%BC%82%E4%BA%8EA%E7%9A%84%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2C%E8%AF%B7%E8%AF%B4%E6%98%8EPB%2BPC%E4%B8%8EAB%2BAC%E7%9A%84%E5%A4%A7%E5%B0%8F%E5%85%B3%E7%B3%BB%E5%B9%B6%E5%86%99%E5%87%BA%E8%AF%81%E6%98%8E%E8%BF%87%E7%A8%8B.)
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