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1、学习资料收集于网络,仅供参考学习资料ODCBAty0ty0ty0ty02018-2019 八年级第一学期期末数学模拟试卷一、精心选一选(每题3 分,计 30 分)1、直线3ykx过点(2,1),则 k 的值是()A、2kB、2kC、1kD、学期1k2、点(,)P m n在第四象限,则下列各式中,一定成立的是()3 题图A、0mnB、0mnC、0mnD、0mn3、如图,AB CD,AD BC,AC 和 BD 相交于点O。则图中全等三角形有()A、1 对B、2 对C、3 对D、4 对4、已知一次函数(3)5ymxm,y随x的增大而减小,且与y 轴的交点在y 轴的正半轴上,则m的取值范围是()A、5
2、mB、3mC、53mD、以上都不对5、在ABC和DEF中,若CD,BE,要判断ABCFED,还要添加的条件为()A、AB=ED B、AC=FD C、AB=FD D、AF6、某产品的生产流水线每小时可生产100 件产品,生产的产品没有积压,生产3 小时后安排工人装箱,若每小时装箱150 件,若未装箱的产品数量y(件)是装箱时间t(时)的函数,则这个函数大致图象只能是()A、B、C、D、7、在以下四个图形中。对称轴条数最多的一个图形是().8、如图(8),已知在 ABC 中,AD 垂直平分BC,AC=EC,点 B、D、C、E 在同一直线上,则下列结论1 AB=AC 2 CAE=E 3 AB+BD=
3、DE 4 BAC=ACB正确的个数有()个A、1 B、2 C、3 D、4 9、已知如图(9),AC BC,DE AB,AD平分BAC,下面结论 错误 的是()A、BD+ED=BC B、DE平分ADB C、AD平分EDC D、ED+ACAD 10、如图(10),在 ABC中,AB=AC,BAC=90,直角 EPF的顶点 P是 BC的中点,两边PE、PF分别交 AB、AC于点 E、F,当 EPF在 ABC内绕点 P旋转时,下列结论 错误 的有()A B C D 学习资料收集于网络,仅供参考学习资料A、AE=CF B、EPF 为等腰直角三角形C、EF=APD、12ABCAEPFSS四边形二、细心填一
4、填(每小题4 分,计 20 分)11、直线 y=x+1 与 x 轴交点的坐标为,与y 轴交点的坐标为12、设 ABC的三边 a,b,c 的长度均为自然数,且 abc,b=10,这样的三角形共有个。13、如图 13,BE,CD 是ABC 的高,且 BDEC,判定 BCDCBE 的依据是“_”。14、ABC和 AB C中,已知A=B,AB=B C,增加条件可使 ABC BCA(ASA).15、已知一个等腰三角形两内角的度数之比为14,则这个等腰三角形顶角的度数为三、耐心做一做(16、17、18、19、20 每题 8 分,共 40 分)16、已知三点 A(1,3),B(-2,0),C(2,4),试判
5、断这三点是否在同一条直线上,并说明理由17、在平面直角坐标系中有两条直线:y=35x+95和 y=-32x+6,它们的交点为 P,且它们与 x 轴的交点分别为 A,B(1)求 A,B,P的坐标;(2)求 PAB的面积18、如图,ABC、ECD 都是等腰直角三角形,且 C在 AD上AE图(13)EDCBA图(8)EDCBA图(9)ECDBA图(10)FEPCBAABCDEF文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 Z
6、B6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编
7、码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E
8、4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4
9、 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文
10、档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B
11、2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4
12、S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4学习资料收集于网络,仅供参考学习资料NMEDCBAEDCABHF的延长线与 BD交于 F请你猜想 AE与 BD的关系,并证明你的猜想19 如图 A、B 两个建筑分别位于河的两岸,要测得它们之间的距离,可以从 B 出发沿河岸画一条射线BF,在 BF 上截取 BC=CD,过 D 点作 DEAB,使 E、A、C 三点在同一条直线上,测得DE 长就是 A、B 之间的距离,请你说明道理。20、有一块长方形钢板ABCD,现加工成零件如图所示,按规定20AME,30BNE,加工成的零件才合格。检验工
13、人量得58MEN就判定这个零件不合格,你能说明这是为什么吗?四、用心探一探(21 题 8 分;22 题 10 分;23 题 12 分,共 30 分)21、如图,ABC中,AD、BE、CF是角平分线,交点是点G,GH BC。求证:BGD=CGH.22、如图,已知点B、C、D 在同一条直线上,ABC 和 CDE?都是等边三角形,BE 交 AC 于 F,AD 交 CE 于 H。图(19)GABCDEFH文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4
14、HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 Z
15、B6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编
16、码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E
17、4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4
18、 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文
19、档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B
20、2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4学习资料收集于网络,仅供参考学习资料(1)、求证:BCE ACD;(2)、求证:CF=CH。23、如图(一),在 ABC 中,BAC=90,AB=AC,若 MN 是经过点 A 的直线,BD MN 于 D,CEMN 于 E,(1)求证:BD=AE。(2)若将 MN 绕点 A 旋转,使 MN 与 BC 相交于点 O,其他条件都不变,如图(二),BD 与 AE 边相等吗?为什么?BD、CE 与 DE 有何关系?图(一)图(二)文档编码:CX7X6Z10B2E4 HN
21、1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6
22、Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:
23、CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4
24、HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 Z
25、B6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编
26、码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4文档编码:CX7X6Z10B2E4 HN1J4C8F4S4 ZB6Y5B2B7T4