中考常考平行四边形经典中考真题

行四 边形，\r:. AB//CD , AB=CD .................. 2 分\r．·.乙ABE＝乙CDF........................3 分\r在 ABE和 CDF中.\rAB=CD\r乙ABE＝乙CDF\r{BE=DF\rBl52I! D\r... ABE兰 CDF.........................6 分\r(2) ·: ABE三 CDF\r．·.乙AEB＝乙CFD.........................8 分\r．·.乙AED＝乙CFB\r.-. AE//CF.……............….....…....10分证明 ：（1）在平行四边形 ABCD中，AB=CD,\rAD=CB又乙BAEFF}乙？：：FADBC的中占4i丿'~三?D\r:. 6.ABE竺6.DCF（边角，边） …… 5 分\r(2)在平行四边形 BFDE中 ，\r·: 6.ABE竺 6.DCF,\r:. BE=DF. ·····································································6分\r又 ·:点 E, F分别是 AD, BC的中点\r:. DE=BF, ········································································8 分\r．．．四边形 BFDE是平行四边形 .......................................... 9 分