在平行四边形
中,
的平分线交边
于点E,交
的延长线于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/746303b2-e320-4d06-a1a4-adf9e9d8240f.png?resizew=657)
(1)如图1,求证:
;
(2)如图2,
,连接
、
,当
时,求证:
;
(3)如图3,在(2)的条件下,当
时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/746303b2-e320-4d06-a1a4-adf9e9d8240f.png?resizew=657)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf010c70937201ef97cfeb93f6b623f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bc876e82280a54d49bb142dae9a464.png)
(3)如图3,在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5aab738a3ddb0f89415478ade70d8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
更新时间:2022-08-29 09:07:07
|
相似题推荐
解答题-证明题
|
较难
(0.4)
名校
【推荐1】综合与实践
问题提出
(1)如图①,
是等腰三角形,点
分别在腰
上,且
,连接
.判断
与
长度的大小关系,并证明;
问题探究
(2)如图②,
是
的中线,
交
于
,交
于
,若
,
,则
______;
问题解决
(3)今年全国两会上,不少来自农村、关注“三农”工作的代表委员期待电力在全面推进乡村振兴中发挥越来越重要的作用.某地区规划出如图③所示的四边形
地块,计划开发出一个生态宜居,绿色人文的农业观光区,其中
,
,
,
是现有的地下电缆,
.为满足农业用电,
点和
点分别设置了风力发电机,现要埋电缆线路
与线路
,点
是
的中点.已知埋每米电缆的费用是
元,请问埋电缆线路
的费用是线路
费用的几倍?并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/9cc74ec2-39f3-4a89-bbeb-f6edf30db7bc.png?resizew=429)
问题提出
(1)如图①,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648c864f9f58da1dbb166fee84cfeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9a415bdb7b4e1e35c18a9e53205392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024dc2ccbbe321774df5d44e8785b203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8518c9bd112f86afb26eec99b01934d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
问题探究
(2)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79997547fb75e88ad1e2c66989a4a0.png)
问题解决
(3)今年全国两会上,不少来自农村、关注“三农”工作的代表委员期待电力在全面推进乡村振兴中发挥越来越重要的作用.某地区规划出如图③所示的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eee296a7d9fba487f1485c61580196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b59f0e6f7fa9c50e7f5cc146ba1af1.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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【推荐2】已知:如图,在等边
中,点
在
的延长线上,以
为边在
的右侧作等边
,连接
,设
交
于点
,交
于点
.
![](https://img.xkw.com/dksih/QBM/2020/2/23/2405075510886400/2405298493833216/STEM/c08a2d87c2934770ad8d8e832e1a28df.png?resizew=142)
(1)求证:
;
(2)求
的度数;
(3)连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e2903ff33266528a7902ad51cf8d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4528328ed320d6b5f29570c860593e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2020/2/23/2405075510886400/2405298493833216/STEM/c08a2d87c2934770ad8d8e832e1a28df.png?resizew=142)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51e0aeb3da54e64ab7c0a253283d949.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471fd32f4bf526fb00d05331d56a85ed.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10790b931935792e8dd5e83572e10d5d.png)
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【推荐3】如图,△ABC是边长为5的等边三角形,P是线段AB上一动点,由A点向B点运动(点P与A、B点不重合),Q是BC延长线上一点,与点P同时以相同的速度由C向BC延长线方向运动(Q不与C点重合,当P点到达终点时,Q点停止运动),过P作PE⊥AC于点E,连接PQ交AC于点D.
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961648100589568/2977293779058688/STEM/b4658d9295cd4498bcd43550c0a84b65.png?resizew=260)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961648100589568/2977293779058688/STEM/9597e9db6b634a08814dc12f92a89141.png?resizew=264)
(1)当∠APD=90°时,求AP的长 ;
(2)求证:在点P、Q运动过程中,PD与QD相等;
(3)在点P、Q运动时,线段ED的长是否发生变化?如果改变,求出变化范围;如果不变,说明理由并求出这个值.
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961648100589568/2977293779058688/STEM/b4658d9295cd4498bcd43550c0a84b65.png?resizew=260)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961648100589568/2977293779058688/STEM/9597e9db6b634a08814dc12f92a89141.png?resizew=264)
(1)当∠APD=90°时,求AP的长 ;
(2)求证:在点P、Q运动过程中,PD与QD相等;
(3)在点P、Q运动时,线段ED的长是否发生变化?如果改变,求出变化范围;如果不变,说明理由并求出这个值.
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【推荐1】如图,在
中,
,CD是斜边AB上的中线,EF垂直平分CD,分别交AC,BC于点E,F,连接DE,DF.
![](https://img.xkw.com/dksih/QBM/2022/4/24/2965098410622976/2966356069269504/STEM/f235720f-7b38-4aaa-b8a6-be00a271da30.png?resizew=194)
(1)求∠EDF的度数;
(2)用等式表示线段AE,BF,EF之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/2022/4/24/2965098410622976/2966356069269504/STEM/f235720f-7b38-4aaa-b8a6-be00a271da30.png?resizew=194)
(1)求∠EDF的度数;
(2)用等式表示线段AE,BF,EF之间的数量关系,并证明.
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解答题-作图题
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解题方法
【推荐2】直线AB:y=x+b分别与x,y轴交于A,B两点,点A的坐标为(-3,0),过点B的直线交x轴正半轴于点C,且OB∶OC=3∶1.
(1)求点B的坐标及直线BC的函数表达式;
(2)在y轴上存在点P,使得以点B、C、P三点构成的三角形为等腰三角形,请直接写出点P的坐标:______________;
(3)在坐标系平面内,存在点D,使以点A,B,D为顶点的三角形与△ABC全等,画出△ABD,并求出点D的坐标.
(1)求点B的坐标及直线BC的函数表达式;
(2)在y轴上存在点P,使得以点B、C、P三点构成的三角形为等腰三角形,请直接写出点P的坐标:______________;
(3)在坐标系平面内,存在点D,使以点A,B,D为顶点的三角形与△ABC全等,画出△ABD,并求出点D的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/a7e25364-0022-44f5-bd08-00882ef1f787.png?resizew=312)
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【推荐1】在
中,
,
,直线l经过点A,
于点P,
于点Q.
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970657090199552/2971429249556480/STEM/f87d1137-26e0-4a7f-9eaf-fbe04e8e6a2b.png?resizew=550)
(1)如图1,已知
,
,求梯形BPQC的面积;
(2)如图2,点M是BC中点,连接PM、QM,证明:
;
(3)如图3,过点P作
交CQ于点G,交AC于点H,连接PC,AG,BG,若
,△ACP的周长比△ACQ的周长大
,请直接写出线段GQ的长度.
![](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/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b4d544e8bf721cced49fd2da531eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884e31040f561185ce8fa35c78d2712.png)
![](https://img.xkw.com/dksih/QBM/2022/5/2/2970657090199552/2971429249556480/STEM/f87d1137-26e0-4a7f-9eaf-fbe04e8e6a2b.png?resizew=550)
(1)如图1,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a0367c3fe3c5c5dfefec87f641bbde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86c46a505be9b87bd32d40a4a1b5243.png)
(2)如图2,点M是BC中点,连接PM、QM,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3afe666651f907e0a0a93e6dd6ff559.png)
(3)如图3,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89b272897856760e8a6a8ec61e8e692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9f8d512c89a16499fcd1ea982ebd9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa585b9257ed0798213a9ae9b87d291.png)
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【推荐2】如图,在
中,
,
为边
上的中线,点
与点
关于点
对称,连接
,
,
.
为平行四边形;
(2)以
为边在四边形
同侧作等边
,
,
分别交直线
于点
,
,若
,当
的面积最小时,
的值是否也最小?如果是,求出
的面积最小值;如果不是,请说明理由;
(3)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18670a76edf5a4c32a34021a4ae3feef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解答题-证明题
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(0.4)
【推荐1】在
中,M是斜边
的中点,D为直线
外一点,
,连接
,
.
平分
,求证:
;
(2)如图2,若
,
,求
的长;
(3)如图3,已知点D和边
上的点E满足
,
.连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/8bd7c7eb6140f3acc14ff33b110d7d9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4d54b7ff95f2bb56fc6f7979fae83f.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73223f86437fe0d0c5bfa0230842362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)如图3,已知点D和边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d837ec3d7e3023efee246ac576970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
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解答题-作图题
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较难
(0.4)
名校
【推荐2】如图,四边形
为菱形,请仅用无刻度的直尺,按照下列要求作图.(保留作图痕迹,不写作法)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/edc99361-996a-4985-abfb-c47084f7f433.png?resizew=275)
(1)在图(1)中,E,F分别是
,
的中点,以
为边作一个矩形.
(2)在图(2)中,E是对角线
上一点,
,以
为边作一个菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/edc99361-996a-4985-abfb-c47084f7f433.png?resizew=275)
(1)在图(1)中,E,F分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)在图(2)中,E是对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db9faf6238426d86f47fcd9d6ece1bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-问答题
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较难
(0.4)
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解题方法
【推荐3】如图,在平面直角坐标系中,直线 BC:y=-x+3 交 x 轴于点 B,交 y 轴于点C,直线AD 与直线 BC 互相垂直,垂足为点 E,且 CD=1,
(1)求直线 AD 解析式.
(2)点 P 从点 B 出发沿线段 BO 方向以 1 个单位/秒的速度向终点 O 运动,设△AEP 的面积为 S,运动时间为 t,求 S 与 t 的函数关系式,并直接写出自变量 t 的取值范围.
(3)在(2)的条件下,点 P 运动的同时点 Q 从 C 点出发沿射线 CO 方向以 3 个单位/秒的速度运动, 当点 P 到达终点时,点 Q 也停止运动,过点 P 作 x 轴垂线交 BC 于点 F,连接 FQ 和 EQ,平面内是否存在一点 M,使得以点 E,Q,F,M 为顶点且以 EQ 为边的四边形是菱形?若存在,求出此时 t 值和 M 点坐标;若不存在,说明理由.
(1)求直线 AD 解析式.
(2)点 P 从点 B 出发沿线段 BO 方向以 1 个单位/秒的速度向终点 O 运动,设△AEP 的面积为 S,运动时间为 t,求 S 与 t 的函数关系式,并直接写出自变量 t 的取值范围.
(3)在(2)的条件下,点 P 运动的同时点 Q 从 C 点出发沿射线 CO 方向以 3 个单位/秒的速度运动, 当点 P 到达终点时,点 Q 也停止运动,过点 P 作 x 轴垂线交 BC 于点 F,连接 FQ 和 EQ,平面内是否存在一点 M,使得以点 E,Q,F,M 为顶点且以 EQ 为边的四边形是菱形?若存在,求出此时 t 值和 M 点坐标;若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/ba72dc20-3e6c-47f7-91e3-86d7baee7100.png?resizew=280)
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