如图,将一把三角尺放在边长为1的正方形ABCD上,并使它的直角顶点P在对角线AC上滑动,直角的一边始终经过点B,另一边与射线DC相交于点Q.设A、P两点间的距离为x①当点Q在边CD上时,求证:PB=PQ②
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![如图,将一把三角尺放在边长为1的正方形ABCD上,并使它的直角顶点P在对角线AC上滑动,直角的一边始终经过点B,另一边与射线DC相交于点Q.设A、P两点间的距离为x①当点Q在边CD上时,求证:PB=PQ②](/uploads/image/z/2506198-22-8.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B0%86%E4%B8%80%E6%8A%8A%E4%B8%89%E8%A7%92%E5%B0%BA%E6%94%BE%E5%9C%A8%E8%BE%B9%E9%95%BF%E4%B8%BA1%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E4%B8%8A%2C%E5%B9%B6%E4%BD%BF%E5%AE%83%E7%9A%84%E7%9B%B4%E8%A7%92%E9%A1%B6%E7%82%B9P%E5%9C%A8%E5%AF%B9%E8%A7%92%E7%BA%BFAC%E4%B8%8A%E6%BB%91%E5%8A%A8%2C%E7%9B%B4%E8%A7%92%E7%9A%84%E4%B8%80%E8%BE%B9%E5%A7%8B%E7%BB%88%E7%BB%8F%E8%BF%87%E7%82%B9B%2C%E5%8F%A6%E4%B8%80%E8%BE%B9%E4%B8%8E%E5%B0%84%E7%BA%BFDC%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9Q.%E8%AE%BEA%E3%80%81P%E4%B8%A4%E7%82%B9%E9%97%B4%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BAx%E2%91%A0%E5%BD%93%E7%82%B9Q%E5%9C%A8%E8%BE%B9CD%E4%B8%8A%E6%97%B6%2C%E6%B1%82%E8%AF%81%EF%BC%9APB%EF%BC%9DPQ%E2%91%A1)
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