(1)如图1,正方形ABCD的边长为2,E为AB的中点,P是AC上一动点.连结BD,由正方形对称性可知,B与D关于直线AC对称.连结ED交AC于P,则PB+PE的最小值是___________;(2)如图2,圆O的半径为2,A B C点在圆上,
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![(1)如图1,正方形ABCD的边长为2,E为AB的中点,P是AC上一动点.连结BD,由正方形对称性可知,B与D关于直线AC对称.连结ED交AC于P,则PB+PE的最小值是___________;(2)如图2,圆O的半径为2,A B C点在圆上,](/uploads/image/z/6829028-44-8.jpg?t=%EF%BC%881%EF%BC%89%E5%A6%82%E5%9B%BE1%2C%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA2%2CE%E4%B8%BAAB%E7%9A%84%E4%B8%AD%E7%82%B9%2CP%E6%98%AFAC%E4%B8%8A%E4%B8%80%E5%8A%A8%E7%82%B9%EF%BC%8E%E8%BF%9E%E7%BB%93BD%2C%E7%94%B1%E6%AD%A3%E6%96%B9%E5%BD%A2%E5%AF%B9%E7%A7%B0%E6%80%A7%E5%8F%AF%E7%9F%A5%2CB%E4%B8%8ED%E5%85%B3%E4%BA%8E%E7%9B%B4%E7%BA%BFAC%E5%AF%B9%E7%A7%B0%EF%BC%8E%E8%BF%9E%E7%BB%93ED%E4%BA%A4AC%E4%BA%8EP%2C%E5%88%99PB%2BPE%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E6%98%AF___________%EF%BC%9B%EF%BC%882%EF%BC%89%E5%A6%82%E5%9B%BE2%2C%E5%9C%86O%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B8%BA2%2CA+B+C%E7%82%B9%E5%9C%A8%E5%9C%86%E4%B8%8A%2C)
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