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1、精编学习资料欢迎下载九年级数学相似三角形单元测试一.选择题(每小题 3 分,共 30 分)1.在比例尺为1:5000 的地图上,量得甲,乙两地的距离25cm,则甲,乙的实际距离是()A.1250km B.125km C.12.5km D.1.25km 2.已知0432cba,则cba的值为()A.54B.45C.2 D.213.已知 ABC 的三边长分别为2,6,2,ABC的两边长分别是1 和3,如果 ABC 与ABC相似,那么 ABC的第三边长应该是()A.2B.22C.26D.334.在相同时刻，物高与影长成正比。如果高为1.5 米的标杆影长为2.5 米，那么影长为30 米的旗杆的高为()
2、A 20 米B 18 米C 16 米D 15 米5.如图,ACB=ADC=90,BC=a,AC=b,AB=c,要使 ABC CAD,只要 CD 等于()A.cb2B.ab2C.cabD.ca26.一个钢筋三角架三长分别为20cm,50cm,60cm,现要再做一个与其相似的钢筋三角架,而只有长为30cm 和50cm 的两根钢筋,要求以其中的一根为一边,从另一根截下两段(允许有余料)作为另两边,则不同的截法有()A.一种B.两种C.三种D.四种7、用位似图形的方法，可以将一个图形放大或缩小，位似中心的位置可以选在()A 原图形的外部B 原图形的内部C 原图形的边上D 任意位置8、如图，ABCD 中
3、，EFAB，DEEA=2 3，EF=4，则 CD 的长（）A163B8 C10 D1610、某校计划在一块三角形的空地上修建一个面积最大的正方形水池，使得水池的一边在ABC 的边 BC上，ABC 中边 BC=60m，高 AD=30m，则水池的边长应为()A 10m B 20m C 30m D 40m 二.填空题(每小题 3 分,共 30 分)11、已知43yx,则._yyx12、.已知点 C 是线段 AB 的黄金分割点,且 ACBC,则 ACAB=.13、.把 一 矩 形 纸 片 对 折,如 果 对 折 后 的 矩 形 与 原 矩 形 相 似,则 原 矩 形 纸 片 的 长 与 宽 之 比为.
4、14、如图,ABC 中,D,E 分别是 AB,AC 上的点(DEBC),当或或时,ADE 与 ABC 相似.15、在 ABC 中，B25，AD 是 BC 边上的高，并且ADBDDC2，则 BCA 的度数为 _。16、如图，小伟在打网球时，击球点距离球网的水平距离是8 米，已知网高是 0.8 米，精编学习资料欢迎下载要使球恰好能打过网，且落在离网4米的位置，则球拍击球的高度h 为米.17、如图，在 ABC 中，D、E 分别是 AB、AC 的中点，那么 ADE 与四边形 DBCE 的面积之比是.18、大矩形的周长是与它位似的小矩形的2 倍,小矩形的面积是5cm2,大矩形的长为5cm,则大矩形的宽为
5、cm.19、斜拉桥是利用一组组钢索，把桥面重力传递到耸立在两侧高塔上的桥梁，它不需要建造桥墩，（如图所示），其中 A1B1、A2B2、A3B3、A4B4是斜拉桥上互相平行的钢索，若最长的钢索A1B1=80m，最短的钢索A4B4=20m，那么钢索A2B2=m，A3B3=m 20、已知 ABC 周长为 1，连结 ABC 三边中点构成第二个三角形，再连结第二个三角形三边中点构成第三个三角形，以此类推，第2006 个三角形的周长为三.解答题(60 分)21.(8 分)在方格纸中，每个小格的顶点叫做格点,以格点连线为边的三角形叫做格点三角形.请你在如图所示的44的方格纸中,画出两个相似但不全等的格点三角
6、形(要求:所画三角形为钝角三角形,标明字母,并说明理由).22.、（5 分）如图,测量小玻璃管口径的量具ABC，AB 的长为 10cm，AC 被分为 60 等份.如果小玻璃管口DE 正好对着量具上20 等份处，且DEAB，那么小玻璃管口径DE 是多大?23、.如图,等边 ABC，点 D、E 分别在 BC、AC 上,且 BD=CE，AD 与 BE 相交于点 F.(1)试说明 ABD BCE.(2)AEF 与 ABE 相似吗?说说你的理由.(3)BD2=AD DF 吗?请说明理由.（9 分）24、（8 分）如图:学校旗杆附近有一斜坡小明准备测量学校旗杆AB 的高A B C D 文档编码:CK10B
7、9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K
8、7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D
9、10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7
10、A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6
11、Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2
12、A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码
13、:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9精编学习资料欢迎下载度，他发现当斜坡正对着太阳时，旗杆AB 的影子恰好落在水平地面和斜坡的坡面上，此时小明测得水平地面上的影长BC=20 米，斜坡坡面上的影长CD=8 米，太阳光线AD 与
14、水平地面成30角，斜坡 CD 与水平地面 BC 成 30的角，求旗杆AB 的高度（精确到1 米）25、（8 分）（06 苏州）如图，梯形ABCD 中 AB CD 且 AB=2CD，E,F 分别是 AB，BC的中点。EF与 BD相交于点 M (1)求证：EDM FBM；(2)若 DB=9，求 BM 26.如图，在矩形ABCD 中，E是 CD的中点，BE AC于 F，过 F 作 FGAB交 AE于 G，求证：AG2=AFFC 27、（12 分）如图,平面直角坐标系中,直线AB 与x轴,y轴分别交于MEDCBA文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编
15、码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10
16、B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7
17、K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3
18、D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O
19、7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK
20、6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M
21、2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9精编学习资料欢迎下载A(3,0),B(0,3)两点,点 C为线段 AB上的一动点,过点 C作 CD x轴于点 D.(1)求直线 AB的解析式;(2)若 S梯形 OBCD4 33,求点 C的坐标;(3)在第一象限内是否存在点P,使得以 P,O,B 为顶点的三角
22、形与OBA 相似.若存在,请求出所有符合条件的点 P的坐标;若不存在,请说明理由.28.如图，在梯形ABCD 中，AD BC，若 BCD的平分线CH AB于点 H，BH=3AH，且四边形AHCD 的面积为21，求 HBC的面积。九年级数学相似单元测试参考答案1、D 2、B 3、A 4、B 5、A 6、B 7、D 8、C 9、C 10、B 文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码
23、:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B
24、9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K
25、7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D
26、10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7
27、A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6
28、Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2
29、A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9精编学习资料欢迎下载11、1/4 12、(51)/2 13、214、略15、6516、2.4 米17、1：3 18、4 19、60，40 20、1/22005 21、略22、20/3 23、略24、20 25、（1）略（2）3 26、证明：在矩形 ABCD 中，AD=BC，ADC=BCE=90 又 E是 CD的中点，DE=CE RtADE RtBCE AE=BE FG AB AEBEAGBF AG=BF 在 RtABC中，B
30、FAC于 F RtBFC RtAFB AFBFFBFC BF2=AFFC AG2=AFFC 27、（1）直线 AB解析式为：y=33x+3（2）方法一：设点坐标为（x，33x+3），那么 OD x，CD 33x+3OBCDS梯形2CDCDOB3632x由题意：3632x334，解得4,221xx（舍去）（，33）方法二：23321OBOASAOB,OBCDS梯形334，63ACDS由 OA=3OB，得 BAO 30，AD=3CD ACDS21CD AD 223CD63可得 CD 33AD=，OD C（，33）九年级数学相似 单元测试（）当OBP Rt时，如图若 BOP OBA，则 BOP BA
31、O=30，BP=3OB=3，文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6
32、Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2
33、A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码
34、:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B
35、9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K
36、7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D
37、10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9精编学习资料欢迎下载1P（3，3）若 BPO OBA，则 BPO BAO=30,OP=33OB=1 2P（1，3）当 OPB Rt时 过点
38、P作 OP BC于点 P(如图)，此时 PBO OBA，BOP BAO 30过点 P作 PM OA于点 M 方法一：在 RtPBO中，BP 21OB 23，OP 3BP 23 在 RtPO中，OPM 30，OM 21OP 43；PM 3OM 4333P（43，433）方法二：设（x，33x+3），得 OM x，PM 33x+3由 BOP BAO,得 POM ABO OMPM=xx333=OBOA=333x+33x，解得 x43此时，3P（43，433）若 POB OBA(如图)，则 OBP=BAO 30，POM 30PM 33OM 434P（43，43）（由对称性也可得到点4P的坐标）当 OP
39、B Rt时，点 P在轴上,不符合要求.综合得，符合条件的点有四个，分别是：1P（3，3），2P（1，3），3P（43，433），4P（43，43）28.如图，在梯形ABCD 中，AD BC，若 BCD的平分线 CH AB于点 H，BH=3AH，且四边形AHCD 的面积为21，求 HBC的面积。文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O
40、7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK
41、6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M
42、2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编
43、码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10
44、B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7
45、K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3
46、D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9精编学习资料欢迎下载分析：因为问题涉及四边形AHCD，所以可构造相似三角形。把问题转化为相似三角形的面积比而加以解决。解：延长 BA、CD交于点 P CH AB，CD平分 BCD CB=CP，且 BH=PH BH=3AH PA：AB=1：2 PA：PB=1：3 AD BC PAD PBC：SSPADPBC19SSPCHPBC12：四边形SSPADAHCD27四边形SAHCD21SPAD6SPBC54SSHBCPBC1227九年级数学相似单元测试文档编码:CK10B9W2
47、Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 H
48、Z3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B
49、2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9
50、ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S8M2A9文档编码:CK10B9W2Y7K7 HZ3D10B2O7A9 ZK6Q6S