已知,AB是圆O的直径,弦CD垂直于AB垂足为G,E是直线AB上一动点(不与A,B,G重合),直线DE交圆O于点F,直线CF交直线AB于点P.,设圆O半径为r1. 当点E在直径AB上时,试证明:OE·OP=r的平方2. 当E在AB延长线上
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![已知,AB是圆O的直径,弦CD垂直于AB垂足为G,E是直线AB上一动点(不与A,B,G重合),直线DE交圆O于点F,直线CF交直线AB于点P.,设圆O半径为r1. 当点E在直径AB上时,试证明:OE·OP=r的平方2. 当E在AB延长线上](/uploads/image/z/13966906-58-6.jpg?t=%E5%B7%B2%E7%9F%A5%2CAB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E5%BC%A6CD%E5%9E%82%E7%9B%B4%E4%BA%8EAB%E5%9E%82%E8%B6%B3%E4%B8%BAG%2CE%E6%98%AF%E7%9B%B4%E7%BA%BFAB%E4%B8%8A%E4%B8%80%E5%8A%A8%E7%82%B9%28%E4%B8%8D%E4%B8%8EA%2CB%2CG%E9%87%8D%E5%90%88%29%2C%E7%9B%B4%E7%BA%BFDE%E4%BA%A4%E5%9C%86O%E4%BA%8E%E7%82%B9F%2C%E7%9B%B4%E7%BA%BFCF%E4%BA%A4%E7%9B%B4%E7%BA%BFAB%E4%BA%8E%E7%82%B9P.%2C%E8%AE%BE%E5%9C%86O%E5%8D%8A%E5%BE%84%E4%B8%BAr1.+++%E5%BD%93%E7%82%B9E%E5%9C%A8%E7%9B%B4%E5%BE%84AB%E4%B8%8A%E6%97%B6%2C%E8%AF%95%E8%AF%81%E6%98%8E%3AOE%C2%B7OP%3Dr%E7%9A%84%E5%B9%B3%E6%96%B92.+++%E5%BD%93E%E5%9C%A8AB%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A)
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