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【河北省邯郸市第二十五中学2022-2023学年八年级上学期期中数学试题

  • 2026-02-22 13:44:22
【河北省邯郸市第二十五中学2022-2023学年八年级上学期期中数学试题

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2022-2023学年

第一学期期中(线上)考试八年级数学

一、选择题(110题每题3分,1116题每题2分,共42分)

1. 下列图形具有稳定性是(  )

A. B. C. D. 

2. 下列倡导节约图案中,是轴对称图形的是(

A. B. C. D. 

3. 平面直角坐标系中,点关于y轴的对称点是,点的坐标是(

A. B. C. D. 

4. 如图,点C上,,则等于(

A. B. C. D. 

5. 如图,△ABE≌△ACD,BC10,DE4,则DC的长是(  )

A. 8B. 7C. 6D. 5

6. 用三角板作△ABC的边BC上的高,下列三角板的摆放位置正确的是(  )

A. B. 

CD. 

7. 如图所示的六边形花环是用六个全等的直角三角形拼成的,则∠ABC等于(  )

A. 30°B. 35°C. 45°D. 60°

8. 如图,已知的周长是20,OBOC分别平分,垂足为点D,,则的面积是(

A. 20B. 30C. 40D. 60

9. 如图,一艘海轮位于灯塔P的南偏东70°方向的M处,它以每小时40海里的速度向正北方向航行,2小时后到达位于灯塔P的北偏东40°N处,则N处与灯塔P的距离为

A. 40海里B. 60海里C. 70海里D. 80海里

10. 如图,用四个螺丝将四条不可弯曲的木条围成一个木框,不计螺丝大小,其中相邻两螺丝的距离依序为2346,且相邻两木条的夹角均可调整.若调整木条的夹角时不破坏此木框,则任两螺丝的距离之最大值为何?

A. 5B. 6C. 7D. 10

11. 如图,在四边形中,,连接.若P边上一动点,则长的值不可能是(

A. B. 2C. D. 3

12. 已知,在△ABC中,,如图,(1)分别以B,C为圆心,BC长为半径作弧,两弧交于点D2)作射线AD,连接BD,CD.根据以上作图过程及所作图形,下列结论中错误是(

A. B. BCD是等边三角形

CAD垂直平分BCD. 

13. 如图,正方形网格中有MN两点,在直线上求点P使最短,则点P应选在(

A. AB. BC. CD. D

14. 如图,在中,的垂直平分线交D点,交E点,则下列结论错误的是(

A. B. C. D. 

15. 如图,D内一点,平分,垂足为D,交于点E,.若,则的长为(

A. B. C. 2D. 1

16. 如图,已知等边三角形,点D上,点F的延长线上,E,G,于点P,则下列结论:①;②;③;④.其中一定正确的是(

A. ①③B. ②④C. ①②③D. ①②④

二、填空题(17,18题每题3分,19题每空2分,共10分)

17. 如图,中,分别是的中点,的面积是,则阴影部分的面积是_______

18. 如图,已知是射线上一动点(即Р点可在射线上运动),,则_______时,为直角三角形.

通过网盘分享的文件:【河北省邯郸市第二十五中学2022-2023学年八年级上学期期中数学试题

链接: https://pan.baidu.com/s/1dfBR-IexVO8H8zZX3TQQ5w?pwd=4321 提取码: 4321 

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  1. CONNECT:[ UseTime:0.000696s ] mysql:host=127.0.0.1;port=3306;dbname=nowww460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001009s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000353s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000300s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000486s ]
  6. SELECT * FROM `set` [ RunTime:0.000201s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000556s ]
  8. SELECT * FROM `article` WHERE `id` = 460075 LIMIT 1 [ RunTime:0.000511s ]
  9. UPDATE `article` SET `lasttime` = 1772089794 WHERE `id` = 460075 [ RunTime:0.001376s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000253s ]
  11. SELECT * FROM `article` WHERE `id` < 460075 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000420s ]
  12. SELECT * FROM `article` WHERE `id` > 460075 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000399s ]
  13. SELECT * FROM `article` WHERE `id` < 460075 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003005s ]
  14. SELECT * FROM `article` WHERE `id` < 460075 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005155s ]
  15. SELECT * FROM `article` WHERE `id` < 460075 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000687s ]
0.083392s