1 . 如图所示菱形
为边
上一点,将
沿边
折叠,恰好边
与
所在直线重合,A点落到
延长线上F点,过点F作
的垂线,垂足为G,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82b959c0ee671c220956a821eb1d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c68309d3410c05f5675968900e91fbd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
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2 . 如图1,正方形
边长为
,点
是线段
上一点,且
,点
是直线
上一点,以
为边作正方形
(
,
,
,
逆时针排列),连接
,直线
与直线
交于点
.
恰好过点
时,
的长为______ ;
(2)当点
在直线
的左侧,且
时,
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184921a45f87423e92cf1e627ad55143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184921a45f87423e92cf1e627ad55143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39addc1173a458af87ed5c5e3f06466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6a04a09e31dd3d4550cac64cb3164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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3 . 如图,点P 是正方形
的中心,过点P 的线段
和
将正方形
分割成4个相同的四边形,这4个四边形拼成正方形
. 连接
, 记
和
的面积分别为
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7677a51ff302613249267341746694.png)
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
____________
(2)正方形
和
的面积之比为_____________ . (用含k 的代数式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71ca0596576a3d5611033611e0aaf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5698d18ebae854786297dcb0b5c53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169241c06da486945aa6595a6a3c7ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999e4646d2e3740b509d9f5a1d8091fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b982b4ed3b75609bda6af3914986d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7677a51ff302613249267341746694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a808d770201bf036cac84a1933623c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
(2)正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f397c6962c6c28fd0db61609257a7635.png)
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名校
4 . 如图,A,B是某河中两块石头,小环利用三把相同的直角三角板,激光笔等工具测量A,B的距离.第一步,小环在河边找一点P,放置三角板
,使得点C与P重合,测得点A,C,E共线,点B,C,D共线.第二步,在点D,E用激光笔分别向点A,B照射.第三步,摆放另外两个三角板,使得三个三角板的最长边在同一直线上,激光射线
分别经过点F,I,其中
,
.若点H,J均在边
上,
,
,
,则
的长为______
,A,B的距离为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68251f6ce06168cfb89fe164ecf104ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bdd3de15951658a738ef211d59a693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398b78068b887520152a1b8360e7eeb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339995d498f25dfca84d3ea941ebdd2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9419ba0f0d24bcc0a694361a9ef8af6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1e7de6dca06f339983b69a669928dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da61b091cf7929ca285023ec29245dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405554b6a34430029b4bab739d69bca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/405554b6a34430029b4bab739d69bca3.png)
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5 . 如图,在长方形
中,
为等腰直角三角形,且
,点
在线段
上,点
在线段
上,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83af576f9d1784d0ca21f3567c201d42.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6783d3cea667c670e5bf7282aca3f293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83af576f9d1784d0ca21f3567c201d42.png)
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2024-03-02更新
|
165次组卷
|
3卷引用:浙江省杭州市上城区2023-2024学年八年级上学期期末数学试题
6 . 如图,
是圆内接三角形,点
是圆上一点,连结
,
,
与
交于点
,且满足
,
.若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a783e5ffcf7a4ea9e531ea76199487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf68831c4a80d0ef3b08ffc98772f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277fa450a0c513a86a74420f8ee99f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/1d72b91a-8b10-4cdc-b2cf-de9d92840698.png?resizew=133)
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2024-02-20更新
|
229次组卷
|
4卷引用:浙江省杭州市滨江区2023-2024学年九年级上学期期末数学试题
浙江省杭州市滨江区2023-2024学年九年级上学期期末数学试题(已下线)【2024年】【初三】【期末】【滨江区】【数学】【洪源收集】广东省深圳市福田区实验教育集团2023-2024学年九年级下学期开学考试数学试题(已下线)专题06 三角形(全等、相似)(2大易错点分析+19个易错点+易错题通关)-备战2024年中考数学考试易错题(江苏专用)
7 . 清代数学家李锐在其著作《勾股算术细草》中利用三个正方形出入相补的方法证明了勾股定理.如图,在
中,
,
和
为边,按如图所示的方式作正方形
,
和
,
与
交于点J,
与
交于点E,
与
交于点J,
与
交于点E.若四边形
和
的面积和为5,四边形
和
的面积和为12,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73572e5eb91e63c60c17dcac75cc7d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cc611178d93a8293a23bfd2945c45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211c130e20ea36d96e88927f88df956e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429b59755ac850d9d74091bae5cdfd08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dbd5b02d9a9624c888a3bb3ae5db584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a8f1bb76ce6165559a590f88b2787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c845bb8ceaa4caef3af4f1e4366b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28d6477c85c5a4ac410a884e92fbe53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42e90b10627ce4adfe97c633648022f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
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8 . 如图,在正方形
的右下角有一个正方形
,以点
为顶点向左构造正方形
,使点
分别落在边
上,当
三点共线时,则
的值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f82dcc0cc81efe70ff0c75c2dcde146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcd40fa80b940090bbce51e01cb1fd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b98d2647df6d1e12f18f7fd68a6188b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db2b289ea746c9f097aa63d39e05bd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/28/95956c28-bbd4-4d7e-96bf-a0cc428b1b4e.png?resizew=113)
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9 . 如图1是由四片大小一样的门扇连接成的折叠门,该门的轨道装在天花板上,图2是其示意图.已知轨道
,在推拉合页
或
时,滚轮
,
在轨道上移动,已知每小片门扇宽度均相等(
).门完全关上时,门扇恰好贴合整条轨道.刚开始门扇叠合在左边,第一次向右拉开门扇,位置如图2时,
,
,此时门被关上部分
的长是__________
;接着继续向右拉门扇,位置如图3时,
,
,相比第一次,门又拉伸了__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b641d415d1ce13cc99342879b6cd0d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052a6fcaa1a7b30f0b5845896bc06e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43defd54316aac92a3d18d4d400033c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ddc72d61616beb403ae3fd922526c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17477db79d06ffd6f8e4bcd748cea3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
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10 . 如图,O是平面直角坐标系原点,
,
,
,
,P为线段
上一个动点,连结
并延长至点E,使得点E落在直线
上,以
,
为邻边作
,则对角线
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e236c1bce14d0225438e4ef85102076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5762b748bde72fa0e2aa38ebda43ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd3fd00798e7ec50afafe7fa7a4f42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
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