如图,在
中,
,
是
的角平分线,作
交
于点E,作
交
于点F.
是菱形;
(2)若
,则
的值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100b3e7dcd5f34c5234971cd75bff138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58449243fb8b7c40c2308ae2779ee38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
2024·吉林长春·一模 查看更多[1]
更新时间:2024-05-26 19:08:32
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图所示,在梯形ABCD中,AD∥BC,∠BDC=90°,E为DC上一点,∠BDE=∠DBC.
![](https://img.xkw.com/dksih/QBM/2014/2/26/1573709931839488/1573709937426432/STEM/85e2fa86e3e24557ad4c39f73a7f6dea.png)
(1)求证:DE=CE;
(2)若
,试判断四边形ABED的形状,并说明理由.
![](https://img.xkw.com/dksih/QBM/2014/2/26/1573709931839488/1573709937426432/STEM/85e2fa86e3e24557ad4c39f73a7f6dea.png)
(1)求证:DE=CE;
(2)若
![](https://img.xkw.com/dksih/QBM/2014/2/26/1573709931839488/1573709937426432/STEM/6974a27532ca470ab5baf1ff70588451.png)
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解答题-证明题
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适中
(0.65)
【推荐2】如图1,四边形
内接于
,
为直径,过点
作
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/6f344be6-5418-48df-ab4a-d0c8f16a6313.png?resizew=315)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cea68e55bcee57b1730ae469c4925e1.png)
(2)如图2,连接
,若
是
的切线,
.请判断四边形
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/6f344be6-5418-48df-ab4a-d0c8f16a6313.png?resizew=315)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cea68e55bcee57b1730ae469c4925e1.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65639672f444b3d4dc6fc4f357ddbd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在矩形ABCD中,BC=8,tan∠BAC=
,点P从点B出发,沿BC以每秒2个单位长度的速度向终点C运动,已知边BC的中点是点M,点P关于点M的对称点为点Q.当点P不与点M重合时,以MQ为边在BC的上方作正方形MQEF,连接AC,设点P的运动时间为t秒,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/0b5f5f59-1979-4f4d-a672-f4837abe259d.png?resizew=191)
(1)线段AB的长为 .
(2)用含t的代数式表示线段MQ的长.
(3)当点F恰好落在线段AC上时,求t的值.
(4)当正方形MQEF与△ACD重叠部分的图形是三角形时,直接写出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/15/0b5f5f59-1979-4f4d-a672-f4837abe259d.png?resizew=191)
(1)线段AB的长为 .
(2)用含t的代数式表示线段MQ的长.
(3)当点F恰好落在线段AC上时,求t的值.
(4)当正方形MQEF与△ACD重叠部分的图形是三角形时,直接写出t的取值范围.
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,在每个小正方形的边长都是
的方格纸中,有线段
和线段
,点
、
、
、
都在小正方形的顶点上.
(1)在方格纸中画出面积为
的菱形
,且点
,
都在小正方形的顶点上;
(2)在方格纸中画出以
为底边且面积为
的等腰
,点
在小正方形的顶点上,并直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/3966a179-8c1c-461f-bf11-f236cedb7ca5.png?resizew=226)
(1)在方格纸中画出面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)在方格纸中画出以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371a01aa43a5201bb36389beea9ee1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f6f853317967c15f48a56798f6c64c.png)
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解答题-问答题
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(0.65)
名校
解题方法
【推荐2】如图,在矩形ABCD中,AB=6,BC=8,点E是对角线BD上的一点,把△ABE沿着直线AE翻折得到△AFE,且点F恰好落在AD边上,连接BF.
(1)求△DEF的周长;
(2)求sin∠BFE的值.
(1)求△DEF的周长;
(2)求sin∠BFE的值.
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490280189468672/2491511157358592/STEM/842aaec9b83844a091fd1091994d5ea5.png?resizew=172)
您最近一年使用:0次