如图所示,在平面直角坐标系中,点
,
轴于点M,点C在x轴的正半轴上,且
,连接
,
.
是平行四边形;
(2)当
时,求m的值;
(3)当
为等腰三角形时,直接写出m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266504a4bd910b292c74765dc9772f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ea84cba8ccd585ad1da1fd204bc3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e021313481ca0c1e4dd6fe79f78e555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73d681e6e88875151ee489af4047030.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
22-23八年级下·湖北武汉·期中 查看更多[3]
湖北省武汉市洪山区2022-2023学年八年级下学期期中数学试卷(已下线)专题5.2.2 菱形的判定(知识要点+专项练习)-2022-2023学年八年级数学下册同步精品课堂(浙教版)湖北省十堰市郧西县2023-2024学年八年级下学期期中数学试题
更新时间:2023-04-19 18:19:41
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图①所示,已知
,
,
,且满足
,线段
交y轴于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/2431201f-30d2-4bab-ac47-59cfce1ca24f.png?resizew=498)
(1)我们知道,任意三角形内角之和都是
,如图②,点D是y轴正半轴上一点,且在
外部,作
,且
分别平分
,
,求
度数;
(2)如图③(也可以利用图①),在x轴上是否存在一点P(不与C点重合),使三角形
与三角形
的面积相等?若存在,求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3160fc73f2a90ae4a1a97351ab2673b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2637d4ffbb5d613a6694dab703b804f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978afb1da6f1fec85e2b09eeb7ee6403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201e8370c2d0ac5025327a730d4a266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/2431201f-30d2-4bab-ac47-59cfce1ca24f.png?resizew=498)
(1)我们知道,任意三角形内角之和都是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a9eca02ecb768ffa9c517a606758f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c6ed61381807672914fa66f4648d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
(2)如图③(也可以利用图①),在x轴上是否存在一点P(不与C点重合),使三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aef6cc213757f0c20e7d58ce824ca6.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987039685238784/2988996014538752/STEM/a91f8b00-b494-4837-865f-d0a73e7d43bc.png?resizew=237)
(1)当
时
________;
(2)已知点
在函数图象上,则
_______;
(3)已知函数
的图象与函数
的图象关于y轴对称,我们称
为
的镜像函数.请在图中画出
,
的图象.
(4)若直线
与函数
和
的图象有且只有一个交点,则a的取值范围是_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aef6cc213757f0c20e7d58ce824ca6.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987039685238784/2988996014538752/STEM/a91f8b00-b494-4837-865f-d0a73e7d43bc.png?resizew=237)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f6ae805e69e5c04728f976047dad58.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf1a6605e782f22ef670c448ed9e210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(4)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af878a885ffb4c4b339d10cde115dc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
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(0.65)
名校
【推荐1】已知:如图1,射线
,点C从M出发,沿射线
运动,
.
(1)当
为等腰三角形时,求
;
(2)当
为直角三角形时,求
的长;
(3)点C在运动的过程中,若
为钝角三角形,则
的长度范围是 ;若
为锐角三角形,则
的长度范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479d987bc7abd828c64f9dc745836ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d69db85eed8d8ef3cd959d8562d815.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/29e8792c-4523-468e-a717-cf7856867098.png?resizew=234)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
(3)点C在运动的过程中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
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解答题-证明题
|
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【推荐2】如图,在平面直角坐标系中,四边形
是矩形,点
的坐标为
,点
的坐标为
,把矩形
沿
折叠,点
落在点
处,
交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/b1a10495-b9e4-4500-80a3-7236643844f4.png?resizew=224)
(1)求证:
;
(2)求
的面积;
(3)求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/b1a10495-b9e4-4500-80a3-7236643844f4.png?resizew=224)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99335705c300addf33d2c39198a6f344.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2041e5d1c62a3ac52f0774faed1cf55.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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解答题-作图题
|
适中
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【推荐1】如图,已知
是
的中线.
(1)尺规作图:作
,使其与
关于点D中心对称;
(2)证明:四边形
为平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/9376fd43-5a04-44b4-b922-47fade1da01b.png?resizew=181)
(1)尺规作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb3e973f4e9361e1d23a0ab56006d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
(2)证明:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
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【推荐2】已知:在
中,点
为
上一点,连接
,
的平分线交
于点
,过点
作
、
的平行线,分别交
、
、
于点
、
、
.
(1)如图
,求证:四边形DFEM为菱形;
(2)如图
,若
,点
为边
的中点,连接
、
,在不添加任何辅助线的情况下,请直接写出图
中的所有平行四边形(不包括以
为一边的平行四边形)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490291354697728/2493603712262144/STEM/6f74d1de-3e58-442d-a237-3579f2203554.png?resizew=359)
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解答题-问答题
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(0.65)
名校
【推荐1】如图,A、B是圆O上的两点,∠AOB=120°,C是劣弧
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466151551492096/2467344197140480/STEM/7e06de2b0171413581267de311366297.png?resizew=188)
(1)试判断四边形OACB的形状,并说明理由;
(2)延长OA至P,使得AP=OA,连接PC,若PC为
,求BC长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aefb3de18ef88fa8c0b05e0bde11501.png)
![](https://img.xkw.com/dksih/QBM/2020/5/19/2466151551492096/2467344197140480/STEM/7e06de2b0171413581267de311366297.png?resizew=188)
(1)试判断四边形OACB的形状,并说明理由;
(2)延长OA至P,使得AP=OA,连接PC,若PC为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
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【推荐2】如图,在矩形ABCD中,AB=6,P为边CD上一点,把
沿直线BP折叠,顶点C折叠到
,连接
与AD交于点E,连接CE与BP交于点Q,若CE⊥BE.
(1)求证:
ABE ∽
DEC;
(2)当AD=13时,AE>DE,求CE的长;
(3)连接
,
①判断四边形
的形状.请说明理由.
②当CP=4时,并求CE•EQ的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0f0ccc8492a0ccf1eee24867060643.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(2)当AD=13时,AE>DE,求CE的长;
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702518d070e667c54087eebed9c410b7.png)
①判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7778d3e02de5c4cfaf4c663e8dca85.png)
②当CP=4时,并求CE•EQ的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/9cdbcc32-af60-498f-82ea-9e3fda27b33f.png?resizew=154)
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