1 . 如图1,点A是反比例函数
的图象上一点,连接
,过点A作
轴交
的图象于点
,连接
并延长交
的图象于点
,过点
作
轴交
的图象于点
,已知点
的横坐标为1,
,连接
,小明通过对
和
的面积与
的关系展开探究,发现
的值为__________ ;如图2,延长
交
的图象于点
,过点
作
轴交
的图象于点
,依此进行下去.记
,
,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e5b71285c5dc31bb987f1a90212a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec549f15430d63c3dc6c6e94e7321ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8284abcb800da69e8ae620031e167630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fc6cf34323f80b94fe2a9d0867d62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ce8fcddbf8750a7cb3f98941ff661f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0561be8c8b260890224cf498ff04970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1e41a02e64216b2092f20e9bb81811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4a2fe4726056f87b882dc1a0f9ccf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da352f5871761da93bc38d96bced4e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab783880d7aabc422916886630fc576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/e3391d77-462b-4aa5-8ee4-0eb94c97a550.png?resizew=428)
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2023-04-20更新
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198次组卷
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3卷引用:2023年浙江省湖州市吴兴区中考一模数学试题
2 . 如图,
个边长为2的等边三角形有一条边在同一直线上,且这些等边三角形的第三个顶点位于该直线的同一侧.设
的面积为
,
的面积为
,…,
的面积为
,请探究并解决下列问题:
(1)等边三角形
的面积等于______ .
(2)
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aceb113626093e0e431f30fa45c2c444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14d6cbf01ed870324b157f53103c907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8abb26d62874132ac69b552dd8cda7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48b334accb5544e2c3403f738f8d543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/2/8f4dfb7c-7ccb-4d60-b19e-62fd19bc23bb.png?resizew=373)
(1)等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b7903de4be7d5dc1175cfbf6e8da9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05201ef79a5d5904f492845396fb5470.png)
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3 . 如图,在矩形ABCD中,AD=3,AB=4,E是边AB上一点,△BCE与△FCE关于直线CE对称,连接BF并延长交AD于点G,过点F作FH⊥AD,垂足为点H,设BE=a,请完成下列探究:
(1)AG=_______ (用含a的代数式表示);
(2)若点H为AG的中点,则BE的长为_______ .
(1)AG=
(2)若点H为AG的中点,则BE的长为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/3fe849c4-45d1-40a1-a193-ee02d10ac25b.png?resizew=153)
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2022-07-10更新
|
170次组卷
|
2卷引用:2021年安徽省九年级初中学业水平考试模拟数学试题
名校
4 . 何老师在一次“探析矩形折叠问题”的公开课上,与同学们一起对折纸进行了如下探究:已知正方形
边长为1,G是
边的中点,E是射线
上的一个动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/5ba3916f-b578-4d14-94fe-9881c678bf9d.png?resizew=270)
(1)如图① ,若点E在线段
上且点E与点C不重合,连结
,将
沿着
翻折,使点C落在
上的点M处,连结
延长交
边于点F且
,则
的值为_____
(2)若点E与点C不重合,以点C为圆心,线段
的长为半径作
,当
与线段
只有一个公共点时,
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/5ba3916f-b578-4d14-94fe-9881c678bf9d.png?resizew=270)
(1)如图① ,若点E在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d11045e757d8ab8fc43dacfb4cce29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad366e8cad328b89069ec588850d62.png)
(2)若点E与点C不重合,以点C为圆心,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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2023-03-14更新
|
88次组卷
|
2卷引用:浙江省金华市义乌市义乌市稠江中学2022-2023学年九年级下学期3月月考数学试题
5 . 在数学探究活动中,小明进行了如下操作:如图,在三角形纸片
(
)中剪下以C点为一个顶点,另3个顶点分别在
、
、
上的一个正方形
,量得
,
.
![](https://img.xkw.com/dksih/QBM/2023/3/6/3188464246161408/3189407782502400/STEM/505d7db01d03410f99eb87da363e20d0.png?resizew=88)
(1)正方形
的面积为_____ .
(2)设
和
的面积分别为
的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1777acc5d9f9195b2d1b474a504766f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782880ee8b61f64b5e6c31d275039ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3998154270e20bf3f739cb4bcdac16e2.png)
![](https://img.xkw.com/dksih/QBM/2023/3/6/3188464246161408/3189407782502400/STEM/505d7db01d03410f99eb87da363e20d0.png?resizew=88)
(1)正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d827d6df98b0fb416169bf4a62e8b1.png)
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名校
6 . 如图,有一张矩形纸片ABCD,点E在边AD上,将△ABE沿BE翻折,使点A落在矩形对角线BD上,点A的对应点为点F,连接CF,若DE=2,请探究下列问题:当点F恰好为BD中点时,∠ABE=___________ ;当点C、E、F在同一直线上时,AE=___________
![](https://img.xkw.com/dksih/QBM/2021/11/11/2848919779041280/2855997471932416/STEM/d2e1cdd31fc44ae089f54aaa6500c4a3.png?resizew=198)
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7 . 如图,
是正方形
内点,且
,将
绕点
逆时针旋转得到
,连接
交
于点
,请完成下列探究:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/2daa9e46-a6b0-492d-9e78-8580fc4ae3ad.png?resizew=202)
(1)
的度数为 __
;
(2)若
,
,则
的长为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f46f19939f38833f9152942f8241b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdee944358dbb99d893228c387a00c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38992154fec017e6404ac8d36d0db9f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/2daa9e46-a6b0-492d-9e78-8580fc4ae3ad.png?resizew=202)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2e6494cf8d2dff0746a9bb72cef43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc232acd89fc499de346969ce8ced1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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8 . 如图,在正方形ABCD中,AB=4,M为BC的中点,点N在射线AD上,过点N作NE⊥AM于点E,连接MN,请探究下列问题:
![](https://img.xkw.com/dksih/QBM/2022/3/17/2938231773061120/2963067892039680/STEM/1661621e-70ef-45f0-a250-d8664bf0d349.png?resizew=156)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818eab483ea562c23a7129d6317177d.png)
_______ ;
(2)当△MEN与△ABM相似时,AN=_______ .
![](https://img.xkw.com/dksih/QBM/2022/3/17/2938231773061120/2963067892039680/STEM/1661621e-70ef-45f0-a250-d8664bf0d349.png?resizew=156)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818eab483ea562c23a7129d6317177d.png)
(2)当△MEN与△ABM相似时,AN=
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9 . 如图,在矩形ABCD中,AD=3,AB=4,E是边AB上一点,△BCE与△FCE关于直线CE对称,连接BF并延长交AD于点G,请完成下列探究:
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991492707655680/2992093370220544/STEM/da3b4e71-26e3-42c8-80e7-b6ed94ab6a74.png?resizew=138)
(1)设BE=a,则AG=_________ (用含a的代数式表示 );
(2)若点F为BG中点,则BE的长为___________ ;
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991492707655680/2992093370220544/STEM/da3b4e71-26e3-42c8-80e7-b6ed94ab6a74.png?resizew=138)
(1)设BE=a,则AG=
(2)若点F为BG中点,则BE的长为
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2022九年级·全国·专题练习
名校
10 . 定义:有一组邻边相等且对角互补的四边形叫做等补四边形.例:如图1,四边形内接于⊙O,AB=AD.则四边形ABCD是等补四边形.
探究与运用:如图2,在等补四边形ABCD中,AB=AD,其外角∠EAD的平分线交CD的延长线于点F,若CD=10,AF=5,则DF的长为__ .
探究与运用:如图2,在等补四边形ABCD中,AB=AD,其外角∠EAD的平分线交CD的延长线于点F,若CD=10,AF=5,则DF的长为
![](https://img.xkw.com/dksih/QBM/2022/4/30/2969164880150528/2970572813377536/STEM/56cd2b13270b44759880bf44454f055e.png?resizew=299)
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2022-05-02更新
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421次组卷
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4卷引用:专题21 填空题压轴题之几何综合计算-备战2022年中考数学临考题号押题(全国通用)
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