题型:解答题-问答题
难度:0.4
引用次数:98
题号:22536448
(1)问题发现:如图1,在
和
中,
,
,
,连接
交于点M,填空:
;
;
(2)类比探究:如图2,在
和
中,
,
,连接
交
的延长线于点M,请判断
的值及
的度数,并说明理由;
(3)拓展延伸:如图3,在(2)的条件下,将
绕点O旋转至点C与点M重合,若
,
,填空:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2255c5ec3e056f67109c29e56cf8aa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cbad6599796efc1c177ae9349feda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1397f20656d3a4117f3145102105244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b521c99e1f87bfb16c2060393482d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b0594893c40c5578051097ccad61e0.png)
(2)类比探究:如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a20118349af7f5d14f8ef63e3a695dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332084cfb20ebc7efa528abeb9c49e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c0fed1bec279a67db01c918711d4f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f9c3b578fc0598d5ec6c79404c6cc2.png)
(3)拓展延伸:如图3,在(2)的条件下,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70834818750d0454474ac7c357cd287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c95b85f6d549d83e045784a5ecf8e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
更新时间:2024-04-20 15:49:19
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在中,
,
,点
是
的中点,
交
于点
,
为
上一动点,连接
,将线段
绕点
逆时针旋转
,得到线段
,连接
,
.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc97b284d8756186fbe9bcb4038adddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f86111c02b3e107a25ce3111a8f57a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd39d1aa24e873206cdfc7872043c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11667abcb2759f301391b9850352be.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410e36cdbf700da363caf0104d431edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6abc07010ba722dd6cfb60f1de857a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11667abcb2759f301391b9850352be.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,
和
都是等腰直角三角形,
.
在
上,点
在
上,线段
与
的数量关系是____________,位置关系是____________;
(2)【探究】把
绕点
旋转到如图2的位置,连接
,
,(1)中的结论还成立吗?说明理由;
(3)【拓展】把
绕点
在平面内自由旋转,若
,
,当
,
,
三点在同一直线上时,则
的长是____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)【探究】把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(3)【拓展】把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1394fc01d91ffe8e6826cab0c933be3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】若,以点C为圆心,2为半径作圆,点P为该圆上的动点,连接
.
(1)如图1,取点B,使
![](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/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3ee4a2510c4c5091513b3ab2dca6f3.png)
①点的轨迹是 (填“线段”或者“圆”);
②的最小值是 ;
(2)如图2,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
(3)如图3,将点A绕点P逆时针旋转
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】问题情境:在
中,
,
,
,
是边
上的高,点
为
上一点,连接
,过点
作
交
于点F.
猜想与证明:
的中点时,试判断点
是否为边
的中点;
(2)如图2,连接
,试判断
与
是否相似;
问题解决:
(3)如图3,当
时,试求线段
的长.
![](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/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
猜想与证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
问题解决:
(3)如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐1】如图甲,操作:把正方形CGEF的对角线CE放在正方形ABCD的边BC的延长线上(CG>BC),取线段AE的中点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/203faa25-3b62-4662-a648-c9950b83f970.png?resizew=491)
(1)探究线段MD、MF的位置及数量关系,直接写出答案即可;
(2)将正方形CGEF绕点C逆时针旋转45°(如图乙),令CG=2BC其他条件不变,结论是否发生变化,并加以证明;
(3)将正方形CGEF绕点C旋转任意角度后(如图丙),其他条件不变.探究:线段MD,MF的位置及数量关系,并加以证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/203faa25-3b62-4662-a648-c9950b83f970.png?resizew=491)
(1)探究线段MD、MF的位置及数量关系,直接写出答案即可;
(2)将正方形CGEF绕点C逆时针旋转45°(如图乙),令CG=2BC其他条件不变,结论是否发生变化,并加以证明;
(3)将正方形CGEF绕点C旋转任意角度后(如图丙),其他条件不变.探究:线段MD,MF的位置及数量关系,并加以证明.
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】如图,在菱形ABCD中,
,
,过点D作
于点E,
于点F.
![](https://img.xkw.com/dksih/QBM/2022/4/7/2953081537781760/2953731321307136/STEM/3a23494f-c427-4141-a614-0c1ce6d1b694.png?resizew=387)
(1)如图1,连接AC分别交DE、DF于点M、N,求证:
;
(2)如图2,将
以点D为旋转中心顺时针旋转,其两边DE′、DF′分别与直线AB、BC相交于点G、P,连接GP,当
的面积等于
时,求旋转角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d276d0010fd458383ea3dd61415e1aa.png)
![](https://img.xkw.com/dksih/QBM/2022/4/7/2953081537781760/2953731321307136/STEM/3a23494f-c427-4141-a614-0c1ce6d1b694.png?resizew=387)
(1)如图1,连接AC分别交DE、DF于点M、N,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2192d703ee8cc7d607ac0ca75fc785de.png)
(2)如图2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332973af7dc3a9a813aff1704c55e785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818e85b6d1dba50519ccac5c44c54f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐3】综合与实践
数学模型可以用来解决一类问题,是数学应用的基本途径.通过探究图形的变化规律,再结合其他数学知识的内在联系,最终可以获得宝贵的数学经验,并将其运用到更广阔的数学天地.
(1)问题初探:如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f602b0369e93c39e72d7ad5487a2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c40e779ed185ceb025be51caca951d5.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)类比分析:如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170efb9dd74d3bbd2c8d86782c1a4f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f02ce8eebaccdce12872cd9ccf90756e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c40e779ed185ceb025be51caca951d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083bbb385daf30c48983e9ca32adfaf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384da7acfefa7c656eaca2df173f0cb6.png)
(3)学以致用:如图3,正方形ABCD和等腰直角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce483d733b36474425ce23efc7620e5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaedb59b442983718f9c992ba94b8822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d61d846cbc5220533271c962b85c4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a70d5634ed18ca8004a87b4ff09f2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图,在四边形
中,
,
为对角线
上的一点,
,
.
.
(2)如图2,若
,
.
①求
的值.
②连接
,并延长交
于点
,连接
,分别记
的面积为
,四边形
的面积为
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686171942bd7698035016c732db43b63.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a6574405000dab3fec93b438aa2de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cb63aeea0b37799404c8fec092b21d.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff00441c41fc516c37876d266fcbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acefc1a2f02c6fcf971b8038323ea03.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,一次函数
的图象交反比例函数
的图象于
两点,交x轴于点C,P是x轴上一个动点。
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378317481943040/2378358818873345/STEM/9a1f34ce-2979-435b-85ea-121dc46b038c.png)
(1)求反比例函数与一次函数的关系式;
(2)根据图象回答:当x为何值时,一次函数的值大于反比例函数的值?
(3)若
与
相似,请直接写出点P的坐标。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c9708655425573d368c9a4deeeba82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385f7fe6b147940e27df0489b6432b57.png)
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378317481943040/2378358818873345/STEM/9a1f34ce-2979-435b-85ea-121dc46b038c.png)
(1)求反比例函数与一次函数的关系式;
(2)根据图象回答:当x为何值时,一次函数的值大于反比例函数的值?
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
您最近一年使用:0次