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1、人教版数学八年级下册第 18 章 平行四边形性质和判定 综合测试卷（含答案）一、单选题（共有10 道小题）1.如下左图所示，四边形ABCD 的对角线AC和 BD相交于点O，下列判断正确的是（）A若 AO=OC，则 ABCD是平行四边形;B若 AC=BD，则 ABCD是平行四边形;C若 AO=BO，CO=DO，则 ABCD 是平行四边形;D若 AO=OC，BO=OD，则 ABCD是平行四边形2.如图，在 ABC中，点 D、E分别是 AB、AC的中点，A=50，ADE=60，则C的度数为（）A50 B60 C70 D803.如图，在平行四边形ABCD中，下列结论中错误的是（）A 1=2 B.BAD
2、=BCDCAB=CDDACBD4.下列四个命题中，正确的命题个数有（）（1）两组对边分别相等的四边形是平行四边形（2）两组对角分别相等的四边形是平行四边形（3）对角线互相平分的四边形是平行四边形（4）一组对边平行且相等的四边形是平行四边形A4 个B 3 个C2 个D1 个5.如图，在四边形ABCD 中，对角线AC与 BD相交于点 O，不能判断四边形ABCD 是平行四边形的是（）AAB DC，AD=BC BAB DC，AD BC CAB=DC，AD=BC DOA=OC，OB=OD 6.如图，已知在 RtABC中，ABC=90,点 D是 BC边的中点，分别以B,C 为圆心，大于线段 BC长度一半的
3、长为半径画弧，两弧在直线BC上方的交点为P，直线 PD交 AC于点 E,连ODBCAEDBCA21CABDODBCAEDBCAP精品w o r d 可编辑资料-第 1 页，共 10 页-结 BE.则下列结论中，一定正确的是（）ED BC A=EBA EB平分 AED 12EDABA.B.C.D.7.如图，在四边形ABCD 中，E、F分别是 AB，AD的中点，若EF=2，BC=5，CD=3，则 tanC 等于（）A.34B.43C.35D.458.如图，ABC 的周长为26，点 D,E 都在边 BC上，ABC的平分线垂直于AE，垂足为Q，ACB的平分线垂直于AD，垂足为P.若 BC=10，则 P
4、Q的长为（）A.23 B.25 C.3 D.4 9.如果三角形的两边分别为3 和 5，那么连结这个三角形三边中点所得的三角形的周长可能是（）A5.5 B 5 C4.5 D4 10.下列判断正确的有（）顺次连接对角线互相垂直且相等的四边形的各边中点一定构成正方形中心投影的投影线彼此平行在周长为定值p的扇形中，当半径为4p时扇形的面积最大相等的角是对顶角的逆命题是直命题A4 个B3 个C2 个D1 个二、填空题（共有8 道小题）11.如图，点D，E，F 分别是 ABC各边的中点，连接DE，EF，DF，若 ABC的周长为10，则 DEF的周长为12.如图，ABCD 的对角线AC、BD相较于点O，AB
5、CD 的面积为24，则 ABO的面积为EFBCADQPEDBCAABCDEF精品w o r d 可编辑资料-第 2 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S
6、6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1
7、文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A
8、7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I
9、8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2
10、O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U
11、3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O113.如图，ABCD的对角线AC，BD相交于点O，点E，F分别是线段AO，BO的中点若ACBD24 厘米，OAB的周长是18 厘米
12、，则EF厘米14.如图，ABC的周长为 64，E、F、G分别为AB、AC、BC的中点，A、B、C分别为EF、EG、GF的中点，ABC 的周长为 _如果 ABC、EFG、ABC分别为第 1 个、第 2 个、第 3 个三角形，按照上述方法继续作三角形，那么第n 个三角形的周长是 _ 15.已知点D与点A（8，0），B（0，6），C（a，a）是一平行四边形的四个顶点，则CD长的最小值为 .16.如图，AB是O的一条弦，点 C是O上一动点，且 ACB=30，点 E、F分别是 AC、BC的中点，直线 EF与O交于 G、H两点，若O的半径为 7，则 GE+FH的最大值为 .17.如图，在ABCD 中，P是
13、 CD边上的一点，且 AP和 BP分别平分 DAB和 CBA。若 AD=5，AP=8，则 APB的周长是。18.如图，在 ABCD中，AD=2AB，F是 AD的中点，作 CE AB，垂足 E在线段 AB上，连接 EF、CF，则下列结论中一定成立的是（把所有正确的结论的序号都填上）ODBCAFEODBCACABFEGBCAHGFEBAOCCDPAB精品w o r d 可编辑资料-第 3 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G
14、10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S
15、6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1
16、文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A
17、7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I
18、8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2
19、O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U
20、3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O112DCFBCDEFCF2BECCEFSSVV3DFEAEF三、解答题（共有7 道小题）19.已知：如图，E、F是平行四边形 ABCD 的对角线 AC上的两点，AE CF 求证：(1)ADF CBE；(2)EB DF 20.如图，在平行四边形ABCD中，AECF，求证：ABECDF21.如图所示，D为ABC的边 AB上一点，DF交 AC于点 E，且 AE=CE，FC AB 求证：CD=AF ABCDEFADCBFEFDBCAEFEBCAD精品w o r
21、d 可编辑资料-第 4 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1
22、E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:
23、CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10
24、HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 Z
25、Y1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编
26、码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G1
27、0 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O122.如图所示，在四边形ABCD 中，M是 BC中点，AM、BD互相平分于点O，那么请说明AM=DC 且 AM DC 23.如图，已知BEDF，ADF=CBE，AF=CE。求证：四边形DEBF是平行四边形。24.分 别 以
28、ABCD（CDA 90）的 三 边AB,CD,DA 为 斜 边 作 等 腰 直 角 三 角 形，ABE,CDG,ADF.如图 1，当三个等腰直角三角形都在该平行四边形外部时，连接 CF,EF.请判断 CF与 EF的关系（只写结论，不需证明）；如图 2，当三个等腰直角三角形都在该平行四边形内部时，连接CF,EF,中结论还成立吗？若成立，给出证明：若不成立，说明理由.ODMBCADFACBEFEGBDACEFGBDAC精品w o r d 可编辑资料-第 5 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3
29、D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E
30、6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:C
31、M9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 H
32、A3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY
33、1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码
34、:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10
35、 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O125.已知：如图，在梯形ABCD 中，AD BC，AD=24cm，BC=30cm，点 P自点 A向 D以 1cm/s的速度运动，到D点即停止点Q自点 C向 B以 2cm/s 的速度运动，到B点即停止，直线PQ截梯形为两个四边形问当P，Q同时出发，几秒后其中一个四边形为平行四边形？参考答案一、单选题（共有10 道小题）1.D 2.C3.D4.A 5.A 6.B7.B 8.C.9.A 10
36、.B 二、填空题（共有8 道小题）BCADPQEFBCAD精品w o r d 可编辑资料-第 6 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6
37、P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I
38、3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D
39、4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6
40、R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM
41、9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA
42、3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O111.5 12.6 13.3 14.1464n15.7 216.10.5.17.24 18.解析：F 是 AD的中点12DFADAB=DF=CD D
43、FC=DCF 又由 AD BC得 DFC=BCF 12DCFBCD：如图，延长BA、CF交于点 G，GFA=DFC，GAF=D，AF=DF AFG DFC GF=CF 在 RtGEC 中，EF=CF：由可知F 是 GEC边 GC的中点122CEGCEFSSGE CEVV，12BECSBE CEV又 GE=AG+AE=CD+AEBE CEGBECSSVV，即2CEFBECSSVV：由可知G=GEF EFC=2 GEF G=DCF，DCF=DFC GEF=DFC DFE=DFC+EFC DFE=3 AEF 三、解答题（共有7 道小题）19.证明：(1)AE CF，AE EFCF FE，即 AF C
44、E 又 ABCD 是平行四边形，AD CB，AD BC DAFBCEHGABCDEF精品w o r d 可编辑资料-第 7 页，共 10 页-文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J
45、2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6
46、P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I
47、3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D
48、4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6
49、R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM
50、9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1文档编码:CM9I3U3A7G10 HA3D4J2I8S6 ZY1E6R6P2O1在ADF与CBE中AFCEDAFBCEADCB，ADF CBE(SAS)(2)ADF CBE，DFA BEC DFEB20