1小时.AB是圆O的直径,过A作圆O的切线,在切线上截取AC=AB.连结OC交圆O于D.连结BD并延长交AC于E.圆F(较小)是三角形ADE的外接圆,F在AE上.求证:1.CD是圆F的切线 2.CD=AE只要做第二小题就可以.对不起
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![1小时.AB是圆O的直径,过A作圆O的切线,在切线上截取AC=AB.连结OC交圆O于D.连结BD并延长交AC于E.圆F(较小)是三角形ADE的外接圆,F在AE上.求证:1.CD是圆F的切线 2.CD=AE只要做第二小题就可以.对不起](/uploads/image/z/2655323-35-3.jpg?t=1%E5%B0%8F%E6%97%B6.AB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E8%BF%87A%E4%BD%9C%E5%9C%86O%E7%9A%84%E5%88%87%E7%BA%BF%2C%E5%9C%A8%E5%88%87%E7%BA%BF%E4%B8%8A%E6%88%AA%E5%8F%96AC%3DAB.%E8%BF%9E%E7%BB%93OC%E4%BA%A4%E5%9C%86O%E4%BA%8ED.%E8%BF%9E%E7%BB%93BD%E5%B9%B6%E5%BB%B6%E9%95%BF%E4%BA%A4AC%E4%BA%8EE.%E5%9C%86F%EF%BC%88%E8%BE%83%E5%B0%8F%EF%BC%89%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2ADE%E7%9A%84%E5%A4%96%E6%8E%A5%E5%9C%86%2CF%E5%9C%A8AE%E4%B8%8A.%E6%B1%82%E8%AF%81%EF%BC%9A1.CD%E6%98%AF%E5%9C%86F%E7%9A%84%E5%88%87%E7%BA%BF+2.CD%3DAE%E5%8F%AA%E8%A6%81%E5%81%9A%E7%AC%AC%E4%BA%8C%E5%B0%8F%E9%A2%98%E5%B0%B1%E5%8F%AF%E4%BB%A5.%E5%AF%B9%E4%B8%8D%E8%B5%B7)
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