如图,在菱形
中,
,点E,F分别是边
,
上的动点,且
,连接
,
相交于点P,连接
交
于点G.
的大小;
(2)在
上取点M,使得
,过点A作
交
于点N,求证:C,N,M三点在同一条直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.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/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c67f427c3e4854bffe76d3c2f12463c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f6789ed3135c1e0af1f645a420e4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
2023·福建厦门·模拟预测 查看更多[2]
2023年福建省厦门市思明区中考模拟数学试题(已下线)重难点03+平行四边形与特殊平行四边形(8大题型+满分技巧+限时分层检测2)-2024年中考数学【热点·重点·难点】专练(全国通用) - 副本
更新时间:2023-06-10 08:40:58
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相似题推荐
解答题-证明题
|
适中
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【推荐1】如图,在四边形
中,
,
,
,
是
的中点,
,
![](https://img.xkw.com/dksih/QBM/2020/3/25/2427047788470272/2427935765970944/STEM/db0a7b6f53c64417af2cbce1860d6f90.png?resizew=159)
(1)求证:
是线段
的垂直平分线;
(2)
是等腰三角形吗?试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.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/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://img.xkw.com/dksih/QBM/2020/3/25/2427047788470272/2427935765970944/STEM/db0a7b6f53c64417af2cbce1860d6f90.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
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【推荐2】如图,在△ABC中,∠ACB=90°,AC=BC,BE⊥CE于E,AD⊥CE于D,AD=5cm,DE=3cm,求BE的长.
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819202754584576/1820340961656832/STEM/1d7184b29ff04647b2757e0df6307ff1.png?resizew=132)
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解答题-证明题
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适中
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【推荐1】如图,
是圆内接四边形
的对角线,
于点
平分
.
(1)求
的度数;
(2)点
在
的延长线上,
是该圆的切线.
①求证:
是该圆的切线;
②若
,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ac0f2676c9b3776bfc5363d1879946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/4306966f-16d1-482c-a3cb-9fc630890824.png?resizew=257)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c8cb65d445ee9d5793745cba6ed9ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
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【推荐2】如图,已知圆O的直径AB垂直于弦CD于点E,连接CO并延长交AD于点F,且CF⊥AD,连结AC.
![](https://img.xkw.com/dksih/QBM/2021/11/14/2850966987268096/2899389741015040/STEM/6a149986-c382-46ad-8499-3af2fc7509be.png?resizew=124)
(1)△ACD为等边三角形;
(2)请证明:E是OB的中点;
(3)若AB=8,求CD的长.
![](https://img.xkw.com/dksih/QBM/2021/11/14/2850966987268096/2899389741015040/STEM/6a149986-c382-46ad-8499-3af2fc7509be.png?resizew=124)
(1)△ACD为等边三角形;
(2)请证明:E是OB的中点;
(3)若AB=8,求CD的长.
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【推荐1】如图1,在正方形ABCD中,点E在AD的延长线上,P是对角线BD上的一点,且点P位于AE的垂直平分线上,PE交CD于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/9d10803a-2677-49c5-b1f7-c9b36b8af8aa.png?resizew=304)
(1)猜测PC和PE有什么大小及位置关系,并给出证明.
(2)如图2,把正方形ABCD改为菱形ABCD,其他条件不变,∠ABC=120°时,连接CE,试探究线段AP与线段CE的数量关系.并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/9d10803a-2677-49c5-b1f7-c9b36b8af8aa.png?resizew=304)
(1)猜测PC和PE有什么大小及位置关系,并给出证明.
(2)如图2,把正方形ABCD改为菱形ABCD,其他条件不变,∠ABC=120°时,连接CE,试探究线段AP与线段CE的数量关系.并说明理由.
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解答题-证明题
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适中
(0.65)
【推荐2】如图1,在正方形
和正方形
中,点
在同一条直线上,P是线段DF的中点,连接PG,PC.
与
的位置关系及
的值(写出结论,不需要证明);
(2)如图2,将原问题中的正方形
和正方形
换成菱形
和菱形
,且
度.探究
与
的位置关系及
的值,写出你的猜想并加以证明;
(3)如图3,将图2中的菱形
绕点
顺时针旋转,使菱形
的边
恰好与菱形
的边
在同一条直线上,问题(2)中的其他条件不变.你在(2)中得到的两个结论是否发生变化?写出你的猜想并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290b884d1dd1c199ce9314d3f99714b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3b1771fbc438ff888bd28bb1dadcee.png)
(2)如图2,将原问题中的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbcac572c5e4f2b4a90c9275bd65b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3b1771fbc438ff888bd28bb1dadcee.png)
(3)如图3,将图2中的菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐1】在△ABC中,∠BAC=90°,AB=AC,点D在边BC上,DE⊥DA且DE=DA,AE交边BC于点F,连接CE.
【特例发现】
(1)如图1,当AD=AF时,
①求证:BD=CF;
②推断:∠ACE= °;
【探究证明】
(2)如图2,当AD≠AF时,请探究∠ACE的度数是否为定值,并说明理由.
【特例发现】
(1)如图1,当AD=AF时,
①求证:BD=CF;
②推断:∠ACE= °;
【探究证明】
(2)如图2,当AD≠AF时,请探究∠ACE的度数是否为定值,并说明理由.
![](https://img.xkw.com/dksih/QBM/2021/5/18/2723577965363200/2723713988329472/STEM/8f0a592923a946d2bb7cf21f803b7b22.png?resizew=345)
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【推荐2】在平面直角坐标系中,矩形OABC的顶点O、A、C的坐标分别为O(0,0),A(﹣x,0),C(0,y),且x、y满足
.
(1)矩形的顶点B的坐标是 .
(2)若D是AB中点,沿DO折叠矩形OABC,使A点落在点E处,折痕为DO,连BE并延长BE交y轴于Q点.
①求证:四边形DBOQ是平行四边形.
②求△OEQ面积.
(3)如图2,在(2)的条件下,若R在线段AB上,AR=4,P是AB左侧一动点,且∠RPA=135°,求QP的最大值是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa17142b68397c3c9954a0722747ad12.png)
(1)矩形的顶点B的坐标是 .
(2)若D是AB中点,沿DO折叠矩形OABC,使A点落在点E处,折痕为DO,连BE并延长BE交y轴于Q点.
①求证:四边形DBOQ是平行四边形.
②求△OEQ面积.
(3)如图2,在(2)的条件下,若R在线段AB上,AR=4,P是AB左侧一动点,且∠RPA=135°,求QP的最大值是多少?
![](https://img.xkw.com/dksih/QBM/2019/6/2/2216936417484800/2222033638703104/STEM/94f30c92c4a747f08611d6e83e1a90a8.png?resizew=284)
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