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(2001•荆州)如图,AD是△ABC的角平分线,以D为圆心,AD为半径作⊙D交...
(2001•荆州)如图,AD是△ABC的角平分线,以D为圆心,AD为半径作⊙D交AB于E,交AC于F,AD=AE=2,BE=1.则AC的长是
.
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