如图,在三角形ABC中,AB=BC,已知AB为直径作圆O交AC于点D,过点D作DE垂直BC,垂足为E(1)请判断直线DE与圆O位置关系,说明理由,.(2)过点D作DG垂直AB交圆O于G,垂足为F,若DG=8,FB=2.求AC的长
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![如图,在三角形ABC中,AB=BC,已知AB为直径作圆O交AC于点D,过点D作DE垂直BC,垂足为E(1)请判断直线DE与圆O位置关系,说明理由,.(2)过点D作DG垂直AB交圆O于G,垂足为F,若DG=8,FB=2.求AC的长](/uploads/image/z/14275031-23-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAB%3DBC%2C%E5%B7%B2%E7%9F%A5AB%E4%B8%BA%E7%9B%B4%E5%BE%84%E4%BD%9C%E5%9C%86O%E4%BA%A4AC%E4%BA%8E%E7%82%B9D%2C%E8%BF%87%E7%82%B9D%E4%BD%9CDE%E5%9E%82%E7%9B%B4BC%2C%E5%9E%82%E8%B6%B3%E4%B8%BAE%EF%BC%881%EF%BC%89%E8%AF%B7%E5%88%A4%E6%96%AD%E7%9B%B4%E7%BA%BFDE%E4%B8%8E%E5%9C%86O%E4%BD%8D%E7%BD%AE%E5%85%B3%E7%B3%BB%2C%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1%2C.%EF%BC%882%EF%BC%89%E8%BF%87%E7%82%B9D%E4%BD%9CDG%E5%9E%82%E7%9B%B4AB%E4%BA%A4%E5%9C%86O%E4%BA%8EG%2C%E5%9E%82%E8%B6%B3%E4%B8%BAF%2C%E8%8B%A5DG%3D8%2CFB%3D2.%E6%B1%82AC%E7%9A%84%E9%95%BF)
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