1 . 数学研究的路径基本上从特殊到一般.活动课上,王老师带领同学们探索平行四边形的旋转,研究发现,在旋转的某些特殊时刻,图形具有特殊的性质.
中,
,
,将矩形
绕点A旋转得到矩形
,当
经过点D时,连接
,线段
的长度为 .
(2)如图2,菱形
绕点A旋转得到菱形
,当
与
共线时,延长
,
交于点 M,判断四边形
的形状,并说明理由.
(3)如图3,将平行四边形
绕点A旋转得到平行四边形
.
①当点 B'落在
上时,小明发现点 D 也恰好在直线
上.王老师提供了如下思路,请补充完整;
,
,
,连接
,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
(2)如图2,菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdd511e3eb724a9add64021b9b6f8c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc3257f37be3274a38ec21b7ce9ebb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f11969bbf853d6a703eac037566f3e5.png)
(3)如图3,将平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdd511e3eb724a9add64021b9b6f8c1.png)
①当点 B'落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d42170c7d4249f6b390823606c18c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
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2 . 如图,在平面直角坐标系中,点B在第一象限,点A在x轴的正半轴上,
,将
绕点O顺时针旋转,每次旋转
,则第2025次旋转结束时,点B 的对应点
的坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7618065af1a031946ef94982d95b299e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图,一个钟摆的摆长
为1.5米,当钟摆向两边摆动时,摆角
为
,且两边的摆动角度相同,则它摆至最高位置与其摆至最低位置时的高度之差
为 ___________________ .(用含
的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3119c19f5145624d22c24761b9c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da971671378e8d40e15f5ef0b6e41467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 如图所示,在矩形
中,
,
.连接对角线
,将矩形
折叠,使点B落在射线
上,点B的对应点记为
,折痕与边
,
分别交于点E,F,当
时,
的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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5 . 如图①所示的手机平板支架由托板,支撑板和底座构成,如图所示图②是其侧面结构示意图.已知托板长
,支撑板长
,
,托板
固定在支撑板顶端点C处,可绕C点旋转,支撑板
可绕点D转动.(结果精确到
,参考数据:
)
,点A到底座
的距离是
;
(2)为了观看舒适,在(1)中的
调整成
.再将
绕点D顺时针旋转,恰好使点B落在直线
上,则
顺时针旋转旋转的角度为
,此时点A到底座
的距离与(1)中相比是增大了还是减小了?增大或减小了多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146c5a1da77fe61bab1c766ff7a48bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4abac4c4b8b61d585b49dd8a31cbc0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb40a73c20381d4dd5c891ccfbd1daf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3bf70722b22983c120d008d097602.png)
(2)为了观看舒适,在(1)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39952df218e18f3fff792afbb5cc79aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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6 . 为了加快城市发展,保障市民出行方便,某市在流经该市的河流上架起一座桥,连通南北,铺就城市繁荣之路.小明和小颖想通过自己所学的数学知识计算该桥
的长.他们制订了测量方案,并利用课余时间完成了实地测量.他们在河的对岸选定一个目标作为点
,然后在河岸的这一边选出点
和点
,分别在
的延长线上取点
,使得
于点
,且在点
处测得
在
的
方向上,在点
处测得
在点
的
方向上,为了减小测量误差,小明和小颖在测量
及
时都分别测量了两次并取它们的平均值作为测量结果,测量数据如下表(不完整).
任务一:表中
________,
________,
________,
________;
任务二:请你根据提供的数据,帮助他们计算桥
的长度.(参考数据:
,精确到
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69968005642449567bc48329a7da9533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1464aba0ae270db6949cbee3c3c79f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0224f039ade8456004378e076d64b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
课题 | 测量桥的长度 | |||
测量工具 | 测量角度的仪器,皮尺等 | |||
测量示意图 | 说明:该桥两侧河岸平行.点![]() ![]() ![]() ![]() | |||
测量项目 | 第一次 | 第二次 | 平均值 | |
测量数据 | ||||
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
任务二:请你根据提供的数据,帮助他们计算桥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd1247df2508ee1a639d11d3361cc08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa19eeaf415ed419e77fe92794f443.png)
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7 . 如图,等腰直角三角形
中,
,
,
平分
交
于点M,过点M作
,垂足为N,点P为直线
上一个动点,以
为边顺时针作
,交直线
于点Q.
(1)如图1,当点P在线段
上时,线段
,
的数量关系为______,线段
,
,
之间的数量关系为_______.
(2)如图2,当点P在线段
上时,(1)中的结论是否成立?若成立,请证明;若不成立,请说明理由.
(3)当点P在直线
上运动时,
,
,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/464bea62-3a86-4c1a-9634-82702e1e3142.png?resizew=540)
(1)如图1,当点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
(2)如图2,当点P在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279563c3c055777ce1aa369a2ef54aed.png)
(3)当点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c81394d36a502b78feddba75e9450c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535d59df5af16caa77bae0a34311b89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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8 . 如图1,点
从等边三角形
的顶点
出发,沿折线运动到顶点
.设点
运动的路程为
,
,图2是点
运动时
随
变化的关系图象,则等边三角形
的边长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffdb682d13dd51c307291e4b2a6e80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/ab7030fc-c350-4c45-a146-deadbc8f6543.png?resizew=351)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图,正方形
中,点E、F分别在边
上,
,
,
与
交于点M,
与
交于点N.有如下结论:①
;②
;③
;④
.上述结论中,所有正确结论的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/36e5f898-bc0c-4743-8ca8-374652dc8983.png?resizew=137)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3222e3ae632c61352bba5d077da074c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a3600b1760a63a10c9a0429b439dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce33c23cc79d51dbfeeb4fba58cc34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3687a1bab75d23af811247becce2497d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783b84ed8d927b77491092f7d2ee2989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5517361a59828e6924b35867a361784e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f343c38b5a00ecc5b9f7dd29aaab094f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/36e5f898-bc0c-4743-8ca8-374652dc8983.png?resizew=137)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
2024-01-30更新
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33次组卷
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3卷引用:河南省新乡市卫辉市2023-2024学年九年级上学期期末数学试题
10 . 问题情境:“综合与实践”课上,老师提出如下问题:将图①中的矩形纸片沿对角线剪开,得到两个全等的三角形纸片,表示为
和
,其中
,
,将
和
按图②所示方式摆放,其中点
与点
重合(标记为点
).当
时,延长
交
于点
,则四边形
的形状为__________.
绕点
逆时针方向旋转,使点
落在
内部,并让同学们提出新的问题.
(1)“巧思小组”提出问题:如图③,当
时,过点
作
交
的延长线于点
,
与
交于点
.试猜想线段
和
的数量关系,并加以证明;
(2)“聪慧小组”提出问题:如图④,当
时,过点
作
于点
,若
,
,则
__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4faa61e76585aa348b6d93b8842e990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439fbb8974a5f907205d26b47b420bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f10327213a940d94a796ba0bb46d42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693cd6179b2a92f03153ce12a0e86b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe4bdc5d9e833b23a1b916c06fc1a35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)“巧思小组”提出问题:如图③,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9a666965db844e9000495b94124b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7e284eac4b90bfb327de768a7beef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)“聪慧小组”提出问题:如图④,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba4c2b1162042e43e5081c7a2d3fda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23393d953a5bcb37b595caba358f34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e776314d1f1670d3a90f2a35125feb67.png)
您最近一年使用:0次
2024-01-11更新
|
123次组卷
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2卷引用:2024年河南省洛阳市涧西区 九年级一模数学模拟试题