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1、沪科版八年级数学下册第十九章四边形练习题含答案1 如图 19Y1，在?ABCD 中，M 是 BC 延长线上的一点，若 A135，则 MCD 的度数是()图 19Y 1 A45B55C65D752 内角和为540的多边形是()图 19Y 2 3 如图 19Y3，?ABCD 的对角线AC，BD 相交于点O，且 ACBD 16，CD6，则 ABO 的周长是()精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 1 页，共 14 页图 19Y 3 A.10 B14 C20 D224 如图 19 Y4，在 ABC 中，ACB 90，AC8，AB 10，DE 垂直平分AC 交AB 于点 E，
2、则 DE 的长为()图 19Y 4 A6 B5 C4 D3 5 下列判断错误的是()A两组对边分别相等的四边形是平行四边形B四个内角都相等的四边形是矩形C四条边都相等的四边形是菱形D两条对角线垂直且平分的四边形是正方形6 如图 19Y5，在?ABCD 中，对角线 AC 与 BD 交于点 O，若增加一个条件，使?ABCD成为菱形，下列给出的条件不正确的是()精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 2 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1
3、E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4
4、文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:C
5、F3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P
6、10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6
7、 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4
8、E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8
9、 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4图 19Y 5 AAB AD BAC BD CAC BD D BAC DAC 7 如图 19Y6，在?ABCD 中，AB AD，按以下步骤作图：以点A 为圆心，小于 AD的长为半径画弧，分别交 AB，AD 于点 E，F，再分别以点E，F 为圆心，大于12EF 的长为半径画弧，两弧交于点G.作射线 AG 交 CD 于点 H，
10、则下列结论中不能由条件推理得出的是()图 19Y 6 AAG 平分 DAB BAD DH CDH BC DCHDH 8 如图 19Y7，在?ABCD 中，AB 6，BC 8，C 的平分线交AD 于点 E，交 BA精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 3 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E
11、4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8
12、ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E
13、5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文
14、档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF
15、3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P1
16、0L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6
17、HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4的延长线于点F，则 AEAF 的值等于()图 19Y 7 A2 B3 C4 D6 9 如图 19Y8，在矩形 ABCD 中(AD AB)，点 E 是 BC 上一点，且 DEDA，AFDE，垂足为 F.在下列结论中，不一定正确的是()图 19Y 8 AAFD DCE BAF12AD CAB AF DBEAD DF 10 如图 19Y9，矩形 ABCD 的对角线AC 与 BD 相交于点 O，CEBD，DEAC，精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载
18、-第 4 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V
19、1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C
20、4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:
21、CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10
22、P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R
23、6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V
24、4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4AD 2 3，DE2，则四边形OCED 的面积为()图 19Y 9 A2 3 B4 C4 3 D8 11 如图 19Y10，在 RtABC 中
25、，E 是斜边 AB 的中点若 AB 10，则 CE_图 19Y10 12 如图 19 Y11，在?ABCD 中，BEAB 交对角线AC 于点 E，若 1 20，则 2的度数为 _精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 5 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4
26、文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:C
27、F3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P
28、10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6
29、 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4
30、E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8
31、 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1
32、E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4图 19Y11 13 已知矩形的对角线AC 与 BD 相交于点 O，若 AO 1，那么 BD_图 19Y12 14 如图 19Y 13 所示，在?ABCD 中，C40，过点 D 作 AD 的垂线，交 AB 于点 E，交 CB 的延长线于点F，则 BEF 的度数为 _精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 6 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5
33、V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3
34、C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码
35、:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U1
36、0P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5
37、R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8
38、V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2
39、R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4图 19Y13 15 如图 19 Y14，在矩形 ABCD 中，AB 3，对角线 AC，BD 相交于点O，AE 垂直平分 OB 于点 E，则 AD 的长为 _图 19Y14 16 如图 19Y15，菱形 ABCD 的面积为120 cm2，正方形 AECF 的面积为50 cm2，则菱形的边长为_cm.精品w o r d
40、学习资料 可编辑资料-精心整理-欢迎下载-第 7 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L
41、5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX
42、8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M
43、2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL
44、5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V
45、3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编
46、码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4图 19Y15 17.如图 19Y16，在正方形ABCD 中，对角线 AC 与 BD 相交于点O，E
47、为 BC 上一点，CE5，F 为 DE 的中点若CEF 的周长为18，则 OF 的长为 _图 19Y16 18 如图 19Y17，已知 BD 是 ABC 的角平分线，点 E，F 分别在边AB，BC 上，EDBC，EFAC.求证：BECF.精品w o r d 学习资料 可编辑资料-精心整理-欢迎下载-第 8 页，共 14 页文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P
48、10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6
49、 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4
50、E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8 ZL5V1E5V3C4文档编码:CF3U10P10L5R6 HX8V4E4M2R8