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1、精编学习资料欢迎下载1 新版人教版八年级数学(上)期末试题班 级姓 名得 分一选择题(每小题3 分,共 36 分)1如图,羊字象征吉祥和美好,下图的图案与羊有关,其中是轴对称图形的有 ()A1 个 B4 个 C3 个 D 2 个2下列式子中,从左到右的变形是因式分解的是()A、(x 1)(x 2)x23x2 B、x23x2(x 1)(x 2)C、x24x 4x(x 一 4)4 D、x2y2(x y)(x y)3.已知点 P(3,1),那么点 P 关于 y 轴对称的P的坐标是()A.P(3,1)B.P(3,1)C.P(3,1)D.P(3,1)4下列各式:a0=1 22=a2?a3=a5(a2b)
2、3a2b3 x2+x2=2x2其中计算正确的序号是()A B C D 5下列各式中,正确的是()A3355xxyyBababccCababccDaabaab6化简的结果是()Ax+1 Bx1 Cx Dx7王师傅用4 根木条钉成一个四边形木架,如图要使这个木架不变形,他至少还要再钉上()几根木条A0 根B1 根C2 根D3 根第 7 题图第 8 题图第 11题图8如图,一个等边三角形纸片,剪去一个角后得到一个四边形,则图中+等于()A180B 220C240D3009如图,正方形网格中的ABC,若小方格边长为1,则 ABC的形状为A锐角三角形B直角三角形C钝角三角形D以上答案都不对10 A、B、
3、C三个村庄连成一个三角形区域,某地区决定在这个三角形区域内修建一个集贸市b 场,要使集贸市场到三个村庄的距离相等,则这个集贸市场应建在()A在 AC、BC两边高线的交点处B在 AC、BC两边中线的交点处C在 A、B 两内角平分线的交点处D在 AC、BC两边垂直平分线的交点处11如图,在等腰直角三角形ABC中,BAC=90,在 BC上截取 BDBA,作ABC的平分线与AD相交于点 P,连结 PC,若 ABC的面积为CBA第 9 题图A P B D C 精编学习资料欢迎下载2 22cm,则 BPC的面积为()A20.5cmB21cmC21.5cmD22cm12随着生活水平的提高,小林家购置了私家车
4、,这样他乘坐私家车上学比乘坐公交车上学所需的时间少用了15 分钟,现已知小林家距学校 8 千米,乘私家车平均速度是乘公交车平均速度的2.5 倍,若设乘公交车平均每小时走x 千米,根据题意可列方程为()ABCD二填空题(每小题3 分,共 30 分)13若分式有意义,则x 的取值范围是14分解因式:x3 4x2+4x=15若分式方程:有增根,则k=16如图所示,已知点A、D、B、F 在一条直线上,AC=EF,AD=FB,要使 ABC FDE,还需添加一个条件,这个条件可以是(只需填一个即可)第 16 题第 17 题第 18 题17如图,在等腰 ABC中,BAC=120o,DE是 AC 的垂直平分线
5、,DE=1cm,则 BD 的长18如图,边长为m+4 的正方形纸片剪出一个边长为m 的正方形之后,剩余部分可剪拼成一个矩形,若拼成的矩形一边长为4,则另一边长为19若等腰三角形腰上的高是腰长的一半,则这个等腰三角形的底角是20如右图,BAC 30,P是 BAC 平分线上一点,PM AC,PDAC,PD30,则 AM 第 20 题三解答题(8+8+8+8+8+10+10=分)21先化简,再求值:先化简,再求值:2112()3369mmmmm,其中9m22.分解因 式(1)2341xxx(2)4481mn23xxx122MDPBCAABDEC文档编码:CY1R2U4H1M7 HZ10B8Z2R10
6、Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7
7、L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3
8、J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码
9、:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2
10、U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7
11、 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B
12、8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3精编学习资料欢迎下载3 A B C D E 23解方程:24已知:如图,ABC 和DBE均为等腰直角三角形。(1)求证:AD=CE;(2)猜想:AD和 CE是否垂直?若垂直,请说明理由;若不垂直,则只要写出结论,不用写理由。
13、25.如图,已知点M、N和 AOB,求作一点 P,使 P到点 M、N的距离相等,?且到 AOB的两边的距离相等(保留作图痕迹,不写作法)某县为了落实中央的“强基惠民工程”,计划将某村的居民自来水管道进行改造该工程若由甲队单独施工恰好在规定时间内完成;若乙队单独施工,则完成工程所需天数是规定天数的1.5 倍如果由甲、乙队先合做15 天,那么余下的工程由甲队单独完成还需5 天(1)这项工程的规定时间是多少天?(2)已知甲队每天的施工费用为6500 元,乙队每天的施工费用为3500 元为了缩短工期以减少对居民用水的影响,工程指挥部最终决定该工程由甲、乙队合做来完成则该工程施工费用是多少?AB0MN文
14、档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY
15、1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H
16、1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ
17、10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2
18、R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8
19、ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z
20、9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3精编学习资料欢迎下载4 7.如图在 RtABC中,AB=AC,BAC=90,O为 BC的中点.(1)写出点O到 ABC的三个顶点A、B、C的距离的大小关系.(2)如果点M
21、、N分别在线段AB、AC上移动,移动中保持AN=BM,请判断 OMN 的形状,并证明你的结论.(3)当点 M、N分别在 AB、AC上运动时,四边形AMON 的面积是否发生变化?说明理由.27题MONCBA文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8
22、 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4
23、Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3
24、文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:C
25、Y1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4
26、H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 H
27、Z10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3文档编码:CY1R2U4H1M7 HZ10B8Z2R10Y8 ZJ7L4Z9G3J3