如图,在边长为4的正方形
内作
,
交
于点E,
交
于点F,连接
,将
绕点A顺时针旋转
得到
.
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.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/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d19d4397d3c35d0d3968b32f4ea2b3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ade06068471a9d76e32b417bef7551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
22-23九年级上·贵州遵义·期中 查看更多[6]
贵州省遵义市红花岗区四校联盟2022-2023学年九年级上学期期中数学试题天津市河东区2022-2023学年九年级上学期期末数学试卷天津市第四十五中学2022-2023学年九年级上学期期末考试数学试卷天津市第三十二中学2022-2023学年九年级上学期期末质量检测数学试卷四川省南充市嘉陵区实验中学2022-2023学年九年级上学期期末数学试题(已下线)专题06 四边形模型(六大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期末真题分类汇编(山东专用)
更新时间:2023-01-02 15:05:09
|
相似题推荐
解答题-证明题
|
适中
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【推荐1】如图,AC=DC,∠BCE=∠2,CE=BC.求证:∠A=∠D,∠1=∠2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/797bee0f-62dc-4e2f-b967-20ff95827408.png?resizew=172)
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【推荐2】如图,在菱形
中,
,点E在边
上(不与点B,点C重合),线段
的中垂线交对角线
于点F,连接
,
,
,
.
.
(2)设
,
.圆圆同学通过画图和测量得到以下近似数据:
猜想:β关于α的函数表达式,并给出证明.
(3)若
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1495a744fed8258160a4c85ad088699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e59617707e98c3441445392333b491.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3935c7e689d895cdad9e28aedb1f12c.png)
α | 70 | 76 | 80 | 88 |
β | 35 | 38 | 40 | 44 |
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aff525313c2b3f13618499c482868e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9760f84e950f15a8be690762a8e340.png)
您最近一年使用:0次
解答题-证明题
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名校
【推荐1】如图,在四边形
中,
,对角线
交于点
平分
,过点
作
交
的延长线于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/93fccfe8-62b7-4568-926d-e270b7d09d09.png?resizew=175)
(1)求证:
;
(2)求证:四边形
是菱形;
(3)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd64b7e072d60e2aa1fea771b65406b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875b90470f7c0e85c988b0cc12aca03d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/93fccfe8-62b7-4568-926d-e270b7d09d09.png?resizew=175)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed1b0a312e0ddf54abbbade60f2ca21.png)
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b11ca0cc9a775ae01fcf593cb0d3283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
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解答题-作图题
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适中
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【推荐2】如图,在平面直角坐标系中,
,
,
.
![](https://img.xkw.com/dksih/QBM/2023/2/13/3174013884522496/3176734723112960/STEM/e88a0f68e0f34a1e8e53bcf87dbab1ba.png?resizew=205)
(1)在图中作出
关于y轴对称的
,并写出
顶点的坐标;
(2)求
的周长;
(3)在x轴上求出点P坐标,使
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c058a8ba318315dde9c5a0392944b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cabf1c3fbd50e05728d66e4128e2bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64196fcc78c3d4e076339b262ad91dd.png)
![](https://img.xkw.com/dksih/QBM/2023/2/13/3174013884522496/3176734723112960/STEM/e88a0f68e0f34a1e8e53bcf87dbab1ba.png?resizew=205)
(1)在图中作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)在x轴上求出点P坐标,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d1d99eab930cef884e01b97d4d56f1.png)
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解答题-证明题
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真题
名校
【推荐1】(1)如图1,在矩形
中,点
,
分别在边
,
上,
,垂足为点
.求证:
.
(2)如图2,在正方形
中,点
,
分别在边
,
上,
,延长
到点
,使
,连接
.求证:
.
【类比迁移】
(3)如图3,在菱形
中,点
,
分别在边
,
上,
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fe81d0b136fc2acc97ab50ffbf6edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7431fd8f28ca8f2914233e50f39bfebe.png)
(2)如图2,在正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff56ea00ca90825f3d95809de24f639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d3d7698a9527c5b88965449e5138db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081af704634e243d46cc6038dc168ad2.png)
【类比迁移】
(3)如图3,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9863283a35d77a8976a4fb57179ac483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb388a36bd5caaa51b7e3c898e3c906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7471908a0a105f024773d398576a0f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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解答题-证明题
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【推荐2】如图,已知正方形ABCD,∠MAN=45°,连接CB,交AM、AN分别于点P、Q,求证:CP2+BQ2=PQ2.
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842503246872576/2843436696141824/STEM/0cd42a29-edcb-4225-bacd-052a1bb06fa7.png?resizew=189)
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解答题-证明题
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【推荐3】如图甲,在正方形ABCD中,点E、F分别为边BC、CD的中点,AF、DE相交于点G,则可得结论:①AF=DE,②AF⊥DE.(不需要证明)
![](https://img.xkw.com/dksih/QBM/2020/8/17/2529675079090176/2531128332156928/STEM/c741a1ce-81d2-47dd-a797-870fd9263c97.png)
(1)如图乙,若点E、F不是正方形ABCD的边BC、CD的中点,但满足CE=DF.则上面的结论①、②是否仍然成立?(请直接回答“成立”或“不成立”)
(2)如图丙,若点E、F分别在正方形ABCD的边CB的延长线和DC的延长线上,且CE=DF,此时上面的结论①、②是否仍然成立?若成立,请写出证明过程;若不成立,说明理由.
![](https://img.xkw.com/dksih/QBM/2020/8/17/2529675079090176/2531128332156928/STEM/c741a1ce-81d2-47dd-a797-870fd9263c97.png)
(1)如图乙,若点E、F不是正方形ABCD的边BC、CD的中点,但满足CE=DF.则上面的结论①、②是否仍然成立?(请直接回答“成立”或“不成立”)
(2)如图丙,若点E、F分别在正方形ABCD的边CB的延长线和DC的延长线上,且CE=DF,此时上面的结论①、②是否仍然成立?若成立,请写出证明过程;若不成立,说明理由.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐1】
为正方形
内一点,且
,将
绕点
按逆时针方向旋转
得到
.
![](https://img.xkw.com/dksih/QBM/2022/5/22/2984798315388928/3016591476760576/STEM/98f5ee562813483fae7d3bbdcc39cab7.png?resizew=124)
(1)作出旋转后的图形;
(2)试求
的周长和面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2cc5f8cec8c498aa12c99c04e1c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad90fb819fcbd4b538a55a987fbbc67.png)
![](https://img.xkw.com/dksih/QBM/2022/5/22/2984798315388928/3016591476760576/STEM/98f5ee562813483fae7d3bbdcc39cab7.png?resizew=124)
(1)作出旋转后的图形;
(2)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de09c80ebff82b33bc45b55933c3fa8.png)
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解答题-证明题
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适中
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【推荐2】已知
和△
都是等腰三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/8d6210f2-0b7f-4257-a364-4fb43ab7dfca.png?resizew=444)
(1)[初步感知]特殊情形:如图①,当点
分别落在边
上时,那么
.(填<、>或=)
(2)[发现证明]如图②,将图①中的
绕点
旋转,当点
在
外部,点
在
内部时,求证:
;
(3)[深入研究]如图④,如果
和
都是等腰直角三角形,
,点
在同一直线上,
为
中
边上的高,则∠CDB的度数为 ,线段
之间的数量关系为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a6609df0eef3223440de5462448c20.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/8d6210f2-0b7f-4257-a364-4fb43ab7dfca.png?resizew=444)
(1)[初步感知]特殊情形:如图①,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018fb1bfa58c028322889b7806f5a989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae1210a744ae636419de68a525faf28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
(2)[发现证明]如图②,将图①中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bc5547bb6d2a7a315962ff75f6ba8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eae0e607a353be56595bae54cfaabff.png)
(3)[深入研究]如图④,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bc5547bb6d2a7a315962ff75f6ba8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a901e9a2ae030fc91bb758d14b5861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7f3fcc51d9fef94d230709f41b184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bc5547bb6d2a7a315962ff75f6ba8e.png)
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