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1、新人教版八年级下册第18 章 平行四边形单元测试试卷（A 卷）（时间 90 分钟满分 100 分）班级学号姓名得分一、填空题（共14 小题，每题2 分，共 28 分）1四边形的内角和等于o，外角和等于o 2正方形的面积为4，则它的边长为，一条对角线长为3一个多边形，若它的内角和等于外角和的3 倍，则它是边形4如果四边形ABCD 满足条件，那么这个四边形的对角线 AC 和 BD 互相垂直（只需填写一组你认为适当的条件）5如果边长分别为4cm 和 5cm 的矩形与一个正方形的面积相等，那么这个正方形的边长为_cm6已知菱形两条对角线的长分别为5cm 和 8cm，则这个菱形的面积是_cm7平行四边形
2、ABCD，加一个条件_，它就是菱形8等腰梯形的上底是10cm，下底是14cm，高是 2cm，则等腰梯形的周长为_cm9已知菱形的一条对角线长为12，面积为30，则这个菱形的另一条对角线的长为10如图，ABCD 中，AEBC 于 E，AF DC 于 F，BC=5，AB=4，AE=3，则 AF 的长为11如图，梯形ABCD 中，AD BC，已知 AD=4，BC=8，则 EF=，EF 分梯形所得的两个梯形的面积比S1：S2为12下列矩形中，按虚线剪开后，既能拼出平行四边形和梯形，又能拼出三角形的是图形1S2SABCDEF第 10 题第 11题_（请填图形下面的代号）13如图，小亮从A 点出发，沿直线
3、前进10 米后向左转30，再沿直线前进 10 米，又向左转30，照这样走下去，他第一次回到出发地A 点时，一共走了米14如图，依次连接第一个正方形各边的中点得到第二个正方形，再依次连接第二个正方形各边的中点得到第三个正方形，按此方法继续下去，若第一个正方形的边长为1，则第 n 个正方形的面积是二、填空题（共4 小题，每题3 分，共 12 分）15如图，ABCD 中，AE 平分 DAB，B=100，则 DAE 等于（）A100B80C60D4016某校计划修建一座既是中心对称图形又是轴对称图形的花坛，?从学生中征集到设计方案有等腰三角形、正三角形、等腰梯形、菱形等四种图案，你认为符合条件的是（）
4、A等腰三角形B正三角形C等腰梯形D菱形17一个多边形的每一个内角都等于140，那么从这个多边形的一个顶点出发的对角线的条数是（）A6 条B 7 条C8 条D9 条18如图，图中的BDC 是将矩形ABCD 沿对角线BD 折叠得到的，图中（包括实线、虚线在内）共有全等三角形（）对A1 B2 C3 D4 303030A第 13 题第 15 题第 18 题文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1
5、0文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:
6、CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J
7、4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9
8、HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N
9、1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9
10、ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y
11、1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10三、解答题（共60 分）19（5 分）如图，在 ABCD 中，DB=CD，C=70，AEBD 于点 E试求 DAE 的度数20（5 分）已知：如图，在ABC 中，中线BE，CD 交于点 O，F，G 分别是 OB，OC 的中点求证：四边形DFGE 是平行四边形文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F1
12、0T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档
13、编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7
14、M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8
15、X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9
16、B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6
17、O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9
18、D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1021（5 分）在一个平行四边形中若一个角的平分线把一条边分成长是2cm 和 3cm?的两条线段，求该平行四边形的周长是多少？22（6 分）已知：如图，ABCD 中，延长AB 到 E，延长 CD 到 F，使 BE=DF 求证：AC 与 EF 互相平分文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T
19、10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码
20、:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2
21、J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9
22、 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9
23、N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9
24、 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9
25、Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1023（6 分）如图，一块正方形地板由全等的正方形瓷砖铺成，这地板的两条对角线上的瓷砖全是黑色，其余的瓷砖是白色的，如果有101 块黑色瓷砖，那么瓷砖的总数是多少？24（6 分）顺次连结等腰梯形四边中点所得的四边形是什么特殊的四边形？画出图形，写出已
26、知，求证并证明已知：求证：证明：文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9
27、D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F1
28、0T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档
29、编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7
30、M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8
31、X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9
32、B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1025（6 分）如图，ABC 中，点 O 是 AC 边上的一个动点，过点O 作直线 MN?BC，?设MN?交 BCA 的平分线于点E，交
33、BCA 的外角平分线于点F（1）判断 OE 与 OF 的大小关系？并说明理由？（2）当点 O 运动何处时，四边形AECF 是矩形？并说出你的理由26（6 分）如图，若已知ABC 中，D、E 分别为 AB、AC 的中点，则可得DEBC，且DE=12BC?根据上面的结论：（1）你能否说出顺次连结任意四边形各边中点，可得到一个什么特殊四边形？?并说明理由（2）如果将（1）中的“任意四边形”改为条件是“平行四边形”或“菱形”或“矩形”或“等腰梯形”，那么它们的结论又分别怎样呢？请说明理由文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9
34、 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9
35、N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9
36、 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9
37、Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T
38、10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码
39、:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2
40、J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1027（7 分）如图，ABD、BCE、ACF 均为等边三角形，请回答下列问题（不要求证明）（1）四边形ADEF 是什么四边形？（2）当 ABC 满足什么条件时，四边形ADEF 是矩形？（3）当 ABC 满足什么条件时，以A、D、E、F 为顶点的四边形不存在？文档编码:CX7M2J4L8
41、X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9
42、B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6
43、O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9
44、D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F1
45、0T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档
46、编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7
47、M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T1028（8 分）如图，以 ABC 的三边为边在BC 的同侧分别作三个等边三角形，?即ABD?、?BCE、ACF，请回答下列问题，并说明理由（1）四边形ADEF 是什么四边形？（2）当 ABC 满足什
48、么条件时，四边形ADEF 是矩形？（3）当 ABC 满足什么条件时，以A、D、E、F 为顶点的四边形不存在文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F
49、10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文
50、档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX7M2J4L8X9 HV9B9N1C6O9 ZY9D9Y1F10T10文档编码:CX