如图,平行四边形
对角线
交于点O,点E在
上,点F在
延长线上,连接
,且
,
与
交于点G.
;
(2)若
,
,G恰好是
的中点,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.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/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cbd1d4bdcf1199ec44f9ba5348ac42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b3f839ce88bf970aceb44ab939bd5b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a77f26a7be722e00baa984f769ec8d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea0ae8b73d3da30c91848d9a473a7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
更新时间:2024-04-22 19:23:49
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
,
,
与
相交于点
.
(1)图中有几对全等的三角形,请你选择一对全等三角形,并说明理由;
(2)连接
,判断
与
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be9d61f743f17ba752482994729d37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb27272b4eb9ed057dd3b4d40697e7c.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/fcd33740-3b2c-4ea9-9105-77fcc6971299.jpg?resizew=166)
(1)图中有几对全等的三角形,请你选择一对全等三角形,并说明理由;
(2)连接
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知:
,
,
,
,垂足分别为点D,点E.
(1)如图1,
①证明
;
②证明
.
(2)如图2,上述结论②还成立吗?如果不成立,请写出线段
,
,
之间的数量关系并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec4356ab824df4fc07f9e179961e361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3c1a6351a96f607a4f8adf721e5a4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/d3b71d2a-1a1e-4b88-9dd2-358a08cc4ded.png?resizew=365)
(1)如图1,
①证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc49295fe37de02851bf211b9391f36.png)
②证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a97c719a127f4cae67573fe7df68766b.png)
(2)如图2,上述结论②还成立吗?如果不成立,请写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】(1)探索发现:如图1,在△ABC中,点D在边BC上,△ABD与△ADC面积分别记为S1和S2,如果分别以BD、DC为底边,则它们有公共高,所以可得
= .
(2)阅读分析:小东遇到这样一个问题:如图2,在△ABC中,
,射线AM交BC于点D,点E、F在AM上,且
,试判断
三条线段之间的数量关系并说明理由.
(3)类比探究:如图3,在四边形ABCD中,
与BD交于点O,点E、F在射线AC上,且
.若OD=3OB,△ABC的面积为2,求出△CDE的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(2)阅读分析:小东遇到这样一个问题:如图2,在△ABC中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ed2b331902d2da7a2b786c544b33f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd799f520b60df79843566e3a9ba570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a36abbc5205badcd6e4d99afa43352.png)
(3)类比探究:如图3,在四边形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a092df4f38e80e0dcd5a95ed1c6faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2730f10f2a635c1fde619817226e482.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/a091f163-1286-48a4-b0f4-f5fcdaccdf0a.png?resizew=525)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】矩形
中
,
,
的垂直平分线
分别交
,
于点E、F,垂足为O.
,
.
①四边形
是什么特殊四边形?说明理由;
②求
的长;
(2)如图(2),动点P、
分别从
、
两点同时出发,沿
和
各边匀速运动一周,即点P自
停止,点Q自
停止.在运动过程中,已知点P的速度为每秒
,点
的速度为每秒
,运动时间为
秒,当A、C、P、
四点为顶点的四边形是平行四边形时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/4eedae8d316c76e3d0b451256de03fb9.png)
①四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766e5eb6796dafc5ffe212afdfc43c0.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)如图(2),动点P、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4139b091e9dc432b267ff68420c77de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee53bbeef279c5b54b255424d05706e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda7c1b5488fb0b4254a8df99004bdb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a9eed64d225267a58cd001db67e2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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,直线
与
轴、
轴分别交于点
、
,
是线段
上的一个动点(点
与
、
不重合),过
点作
轴于点
,
轴于点
,点
的坐标为
,连接
.
(1)求直线
所对应的函数关系式;
(2)设动点
的横坐标为
,
的面积为
.
①当
为何值时,
;
②写出
与
的函数关系式及自变量
的取值范围;
③求使得四边形
是平行四边形时的点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27149c9ff20937492950f42084caa019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ad84a84ed0f550020f561dae537a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)设动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93e1661d70eca6d7eb848b667e388e5.png)
②写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
③求使得四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1023be0c5054eebc87e4f514ff10da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2021/7/15/2764646887161856/2817182893965312/STEM/ecdeb171-fe9e-44bc-9e1f-324cb935cbb1.png?resizew=306)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,
分别是
,
的中点,连接
,过点
作EF
CD,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996358893223936/3001020491505664/STEM/e93cf0843f8d4eab93c953298aa4a993.png?resizew=209)
(1)求证:四边形
是平行四边形;
(2)若四边形
的周长是
,
的长为
,求线段
、
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996358893223936/3001020491505664/STEM/e93cf0843f8d4eab93c953298aa4a993.png?resizew=209)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d24fceca6bc02e8a57dd96038f30d08.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知在
中,
,点 D、
分别为
的中点,点
在
的延长线上,连接
,且
.
(1)如图1,求证:四边形
是平行四边形;
(2)如图2,连接
,在不添加任何辅助线和字母的前提下,请直接写出图2中与
面积相等的四个三角形(
除外).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cae7cc6665dc8edfb9060075b3afb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d2bf3b0064175ca1b8ab02dd463809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5bc93bd7a495dfbcf5034298c1a9a3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/b8a95b9c-e462-4218-934e-d9bae7548c75.png?resizew=251)
(1)如图1,求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af045d2542c40f955a9de356b9b088c4.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8b75b0805f34bea0ea4e7fa3cd0a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,AB是⊙O的直径,E,C是⊙O上两点,且
,连接AE,AC.过点C作CD⊥AE交AE的延长线于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/5b031a04-6633-4402-ac59-2efaef9f8f94.png?resizew=149)
(1)判定直线CD与⊙O的位置关系,并说明理由;
(2)连接OE,连接BE交OC于F,若AB=4,CD=
,
①求证:四边形DEFC是矩形;
②求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0463874e838f03c8396484310bb7d15f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/1/5b031a04-6633-4402-ac59-2efaef9f8f94.png?resizew=149)
(1)判定直线CD与⊙O的位置关系,并说明理由;
(2)连接OE,连接BE交OC于F,若AB=4,CD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
①求证:四边形DEFC是矩形;
②求图中阴影部分的面积.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在边长为2的正方形
中,点E在
边上,点F在
边上,连接
,
,
与
相交于点 P.
,
;
(2)【问题探究】若
.
①利用图2 探究
的值;
②过点P作
,垂足分别为M,N,连接
,试求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)【问题探究】若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
①利用图2 探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac175010746fd4c90a55cb9081a1ffb6.png)
②过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16331f2cda5fb05e70236e2212a155e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次