如图,已知等边△ABC和点P,设点P到△ABC三边AB、AC、BC(或其延长线)的距离分别为h1、h2、h3,△ABC的高为h.在图(1)中,点P是边BC的中点,此时h3=0,可得结论:.在图(2)--(5)中,点P分别在线
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![如图,已知等边△ABC和点P,设点P到△ABC三边AB、AC、BC(或其延长线)的距离分别为h1、h2、h3,△ABC的高为h.在图(1)中,点P是边BC的中点,此时h3=0,可得结论:.在图(2)--(5)中,点P分别在线](/uploads/image/z/8839123-43-3.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%E7%AD%89%E8%BE%B9%E2%96%B3ABC%E5%92%8C%E7%82%B9P%2C%E8%AE%BE%E7%82%B9P%E5%88%B0%E2%96%B3ABC%E4%B8%89%E8%BE%B9AB%E3%80%81AC%E3%80%81BC%EF%BC%88%E6%88%96%E5%85%B6%E5%BB%B6%E9%95%BF%E7%BA%BF%EF%BC%89%E7%9A%84%E8%B7%9D%E7%A6%BB%E5%88%86%E5%88%AB%E4%B8%BAh1%E3%80%81h2%E3%80%81h3%2C%E2%96%B3ABC%E7%9A%84%E9%AB%98%E4%B8%BAh%EF%BC%8E%E5%9C%A8%E5%9B%BE%EF%BC%881%EF%BC%89%E4%B8%AD%2C%E7%82%B9P%E6%98%AF%E8%BE%B9BC%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E6%AD%A4%E6%97%B6h3%3D0%2C%E5%8F%AF%E5%BE%97%E7%BB%93%E8%AE%BA%EF%BC%9A%EF%BC%8E%E5%9C%A8%E5%9B%BE%EF%BC%882%EF%BC%89--%EF%BC%885%EF%BC%89%E4%B8%AD%2C%E7%82%B9P%E5%88%86%E5%88%AB%E5%9C%A8%E7%BA%BF)
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