1.如图已知点O到△ABC的两边AB,AC所在直线的距离相等,且OB=OC.①如图一(左图),若点O在边BC上,试说明AB=AC.②若点O在△ABC的内部,求证AB=AC.http://hiphotos.baidu.com/%D4%CE%CB%C0%C1%CBa/pic/item/d80e00f23b1e57133
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![1.如图已知点O到△ABC的两边AB,AC所在直线的距离相等,且OB=OC.①如图一(左图),若点O在边BC上,试说明AB=AC.②若点O在△ABC的内部,求证AB=AC.http://hiphotos.baidu.com/%D4%CE%CB%C0%C1%CBa/pic/item/d80e00f23b1e57133](/uploads/image/z/5102706-66-6.jpg?t=1.%E5%A6%82%E5%9B%BE%E5%B7%B2%E7%9F%A5%E7%82%B9O%E5%88%B0%E2%96%B3ABC%E7%9A%84%E4%B8%A4%E8%BE%B9AB%2CAC%E6%89%80%E5%9C%A8%E7%9B%B4%E7%BA%BF%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%9B%B8%E7%AD%89%2C%E4%B8%94OB%3DOC.%E2%91%A0%E5%A6%82%E5%9B%BE%E4%B8%80%EF%BC%88%E5%B7%A6%E5%9B%BE%EF%BC%89%2C%E8%8B%A5%E7%82%B9O%E5%9C%A8%E8%BE%B9BC%E4%B8%8A%2C%E8%AF%95%E8%AF%B4%E6%98%8EAB%3DAC.%E2%91%A1%E8%8B%A5%E7%82%B9O%E5%9C%A8%E2%96%B3ABC%E7%9A%84%E5%86%85%E9%83%A8%2C%E6%B1%82%E8%AF%81AB%3DAC.http%3A%2F%2Fhiphotos.baidu.com%2F%25D4%25CE%25CB%25C0%25C1%25CBa%2Fpic%2Fitem%2Fd80e00f23b1e57133)
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