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图1CABFDE勾股定理习题1已知:如图1,点A、D、B、E在同一条直线上,AD=BE,AC∥DF,BC∥EF.求证:AC=DF.2已知:如图2,BE⊥AC,DF⊥AC,垂足分别是E、F,O是BD的中点.求证:BE=DF.3已知:如图3,AB=DE,BC=EF,AF=CD.求证:AB∥DE,BC∥EF.4已知:如图4,AB=AD,AC=AE,∠BAD=∠CAE.求证:.∠B=∠D.5已知:如图5,AD=AE,点D、E在BC上,BD=CE,∠ADE=∠AED.求证:⊿ABE≌⊿ACD6已知:如图6,已知AC、BD相交于点O,AB∥CD,OA=OC.图5CDAEB求证:AB=C... 2024-03-270136 KB5页
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