如图,
,
和
分别平分
和
,
过点
,且与
互相垂直,点
为线段
的中点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/e16e0ac8-1110-448a-a6d6-3e8590ab0073.png?resizew=161)
(1)猜想线段
、
、
有何数量关系?请说明理由.
(2)若
求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/e16e0ac8-1110-448a-a6d6-3e8590ab0073.png?resizew=161)
(1)猜想线段
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e998b1f710a594e8c65df2b8169ce639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
22-23八年级上·江苏·期中 查看更多[1]
(已下线)期中考试八年级数学模拟卷(范围:全等三角形、轴对称图形、勾股定理、实数)-【单元测试】2022-2023学年八年级数学上册分层训练AB卷(苏科版)
更新时间:2022-12-23 21:42:18
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图回答以下问题
(1) 若
,可以得到哪两条线段平行?直接填空: ∥ (不用说明理由)
(2) 在(1)的结论下,如果
,又能得到哪两条线段平行,请说明理由.
(3) 在(2)的结论下,如果
于
,
30°,求
的度数.
(1) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025168d1e90ff4b9443a3cf6b5f80c66.png)
(2) 在(1)的结论下,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
(3) 在(2)的结论下,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923086556413952/1926842536943616/STEM/c12c61cb0a7e48b7aeb4196f809616d9.png?resizew=155)
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【推荐2】如图,已知AB∥CD,点E在BC的延长线上,AE与CD交于点F,∠1=∠2,∠3=∠4,试判断AD与BE的位置关系,并说明为什么.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/d2465895-7426-467c-9781-de3992157737.png?resizew=241)
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【推荐1】如图1:在
中,
平分
,且
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/fa1d63e8-9727-42f7-b194-558ad172ca2d.png?resizew=387)
(1)若
,求
的长;
(2)如图2,若
交
于
,交
于
,且
为等腰三角形,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1a0594e8cadba21c23f1610f268c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258434229ab23f63b62d849429b38f66.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/26/fa1d63e8-9727-42f7-b194-558ad172ca2d.png?resizew=387)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719f34ac90c66e24e4677d0a92261ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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名校
【推荐2】直线AB交x轴于点A(6,0),交y轴于点B(0,6).
(1)如图1,点M为AB的中点,点C在线段OA上,OM交BC于点F.
①求∠BOM的度数;
②如图2,若在线段AB上有点D,且满足BC⊥OD于点E,求证:
BOF≌
OAD.
(2)如图3,当点C在线段OA的延长线上任一点时,以BC为边作等腰Rt
BCG,其中CB=CG,直线GA交y轴于点H,当C在x轴上A点右侧运动时,线段OH的长度是否发生变化?如果不变,求其值;如果变化,求线段OH的取值范围.
(1)如图1,点M为AB的中点,点C在线段OA上,OM交BC于点F.
①求∠BOM的度数;
②如图2,若在线段AB上有点D,且满足BC⊥OD于点E,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)如图3,当点C在线段OA的延长线上任一点时,以BC为边作等腰Rt
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863618886713344/2864450156486656/STEM/e9b65f06-3adc-42af-bf54-2c1e2f02cabd.png?resizew=613)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,在
中,
平分
,与
相交于点
,过点
作
,连接
.
是矩形;
(2)四边形
的对角线
相交于点
,过点
作
交
于点
,若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7157312ed5d2f11531b6707c3486db81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.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/ab837935d6e7d98d03c7f28e398300b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae3d5543f586b351d59c0ffc26a12cc.png)
(2)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae3d5543f586b351d59c0ffc26a12cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccebba29fc82da89b6bf46555c7dcba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e532f1347c0a24a45758be8464e487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5dd1584c5efde708ea34b27ed341c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
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【推荐2】在
中,
,D是斜边
中点,E、F分别是
、
边上的点,且
.
,
①求证:
.
②若
,
,求
的长.
(2)如图2,若
,试写出四条线段
、
、
、
之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efffb3e6a571832b723b3c5795b8e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97075fe3c2a105f5d2d0a27a9f2b3410.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3032820a0d2d50d9143e7923f5936ddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7f4ddec27086c844c1b85ff7431fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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解答题-证明题
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【推荐1】如图,在四边形
中,
,对角线
,垂足为
,点
是
延长线上的点,且
.
(1)求证:
;
(2)当点
为
中点时,求证:四边形
是菱形;
(3)在(2)的条件下,当
满足什么条件时,四边形
是正方形?(不必说明理由)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7295e7dabcbaa6fdbb15001d2e8e716c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967578d2c4086aef3fda57ed4cdae5c0.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/6/28/2752584836464640/2759112656592896/STEM/7a6bc4a980304c7e9965b4474de27dbb.png?resizew=138)
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适中
(0.65)
【推荐2】如图,
中,
是
边上的中点,
是线段
上的一动点,且
∥
分别交直线
于
两点.
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999760216064/2789760875356160/STEM/6b4fca47-79fb-4cde-86e4-856ef3c874fb.png?resizew=374)
(1)求
的长;
(2)如图1,当
时,求
的值;
(3)如图2,随点
位置的改变,
是否为一个定值?如果是,求出这个定值,如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bb06aaa95612d782212dede0a617d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92dbe7d01d47d6c2db1396180caf76d.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758999760216064/2789760875356160/STEM/6b4fca47-79fb-4cde-86e4-856ef3c874fb.png?resizew=374)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f358cc1c7ab5db661d488bbcefb491f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d88aa77da12a390fb72a4d07d9cba7b.png)
(3)如图2,随点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1952ba61f779c2740c1b41d0492f58e.png)
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