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【工大附中八上月考数学】整套试卷手写复盘|动点问题,初二数学的分水岭

  • 2026-10-28 10:43:16
【工大附中八上月考数学】整套试卷手写复盘|动点问题,初二数学的分水岭

往期回顾

【铁一中九上月考数学】整套试卷手写复盘|想冲高分,这套卷子一定要吃透

【交大航天九上月考数学】整套手写复盘|难度不大,适合二类学校学生自测

【工大附中九上月考数学】整套手写复盘|转化思想有妙用,压轴题稳中有变

【高新沣东八上第一次月考数学】整套试卷手写复盘,题型经典,这些易错题别踩坑

【高新三初九上第一次月考数学】整套试卷手写复盘,初三开学首考的核心信号全在这里

陕西中考数学官方评分标准(2023-2025)

冲刺提分!2026年中考数学知识点汇总(完整背诵版)

导语

本次手写完成工大附中月考数学全套试卷,整套试卷风格贴合工大一贯出题风格,稳中有变,八上是初中数学的分水岭,想得高分必须重点攻克几何动点题型。,一起来拆解这套试卷。(文末附有原卷+解析)

一、

试卷整体概况

✅ 难度:整体难度中等偏上,题型稳中有变,基础题占比较大,动点问题是拉分板块

✅ 考察范围:八上前三单元(勾股定理、实数、位置与坐标等)

✅ 试卷特点:试卷整体难度中等偏上,没有偏题怪题,题型常规贴合课内考点。基础题稳,用来巩固课本核心知识;区分度集中在几何动点板块,非常适合西安初二学生自检、同步拔高,提前适应名校几何综合题的出题思路。

二、

重难题型分析

重难点1:勾股定理的应用(第8题)

此类题型难度不大,重点考查根据图形验证勾股定理的原理,需要学生理解图形间的面积关系,从而推出线段关系,进而利用勾股定理求解,需要学生有较好的知识链接能力

重难点2:坐标系中的动点问题(第20题)

此类题型难度较大,重点考查坐标系中的动点问题,尤其是动点形成等腰三角形及全等三角形的找点和计算的方法,属于重难且易错题型,需要分类讨论并算出两个答案,需要学生熟练掌握解题方法并加强计算准确度。

一句话提醒:经典题型需要反复研究弄明白解题思路怎么环环相扣的,真正做到“做一道题会一类题”。

三、

压轴题分析

本次压轴围绕几何动点问题展开,核心考察分类讨论思想,结合全等、线段关系探究。 解题关键:先定动点运动路径,设时间 t 表达线段长度,再分情况画图,转化为静态几何问题求解。 很多孩子卡壳,是只会看静止图,不会跟着动点画出多种位置,找不到全等关系。这套题是非常典型的名校动点模型,吃透这一套,同类动点存在性问题就能打通思路。

填空压轴:第14题小几何

逆等线问题——构造全等

解答压轴:第21题大几何

折叠问题——面积最大值

四、

考后复盘建议

✅ 基础错题:回归课本,把全等判定、勾股计算的步骤规范练熟,保证计算零失误;

✅ 动点错题:养成 “一动一分图” 习惯,每一种情况单独画图,标注线段; 

✅ 训练建议:八上几何想拉开差距,动点专题一定要持续练,这也是期中、期末高频压轴方向;

 ✅ 使用建议:这套卷子适合基础扎实的初二学生限时完成,做完对照手写解析梳理思路。

以下为预览图片版,文末附有电子版下载方式

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  12. SELECT * FROM `article` WHERE `id` > 528879 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000419s ]
  13. SELECT * FROM `article` WHERE `id` < 528879 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000490s ]
  14. SELECT * FROM `article` WHERE `id` < 528879 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000764s ]
  15. SELECT * FROM `article` WHERE `id` < 528879 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000713s ]
0.089232s