如图1,
中,
,在
延长线上取一点
,连接
,作
于点
,交
于点
.
;
(2)如图2,在斜边
上取一点
,连接
,使
分别交
于
两点.求证:
;
(3)如图3,在(2)的条件下,在
上取点
,连接
,使得
.若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149d217efaf5090696904003ec06393a.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e45b9efd79e3e9e9101cf0eb98c824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ccf37a223c01562b112ebb6e696731.png)
(2)如图2,在斜边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f075b33cb8e25a0398ce44f3657b0ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccab6f5e33f000c98f05d6fd70eb9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c177d696b5e8443e43861e680b8de5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d6a8abae1eead1248420c72cc7c813.png)
(3)如图3,在(2)的条件下,在
![](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/5845ffc7d1af9053b027cf9e726f5367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb73ab1f4bfdba296ca5dd93980df73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c68d79aadb526aac24fe4cccdd353f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
更新时间:2024-04-15 09:06:59
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】如图,
,点A、B分别在射线OM、ON上,点C在
内部.
![](https://img.xkw.com/dksih/QBM/2022/10/10/3084577263026176/3089951559131136/STEM/b470a4e546234fb2a2925fdc77c813fe.png?resizew=465)
(1)若
,
①如图1,若
,求证:
.
②如图2,若
,求证:OC平分
.
(2)如图3,点A、B分别在射线OM、ON上运动,点C随之运动,且
,P为OM上定点,当点C运动到何处时,PC的长度最短?请用尺规作图作出PC最短时C点的位置(保留作图痕迹,不要写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1295725f524705f4da5a4abdca5837c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cc2c8187792b2a4a6c630d62a5b388.png)
![](https://img.xkw.com/dksih/QBM/2022/10/10/3084577263026176/3089951559131136/STEM/b470a4e546234fb2a2925fdc77c813fe.png?resizew=465)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2255c5ec3e056f67109c29e56cf8aa74.png)
①如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977da26d8d8d9370ca4b08c22b7b9936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb7855581a61f1844bd4e66976176dc.png)
②如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf133602e80b4f3763f6959088d723e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1d78b22f15c15705e016ef8c12620e.png)
(2)如图3,点A、B分别在射线OM、ON上运动,点C随之运动,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a22c310411d8cdbe1f29da963ebc517.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】综合与探究
等边三角形
在平面直角坐标系中的位置如图所示,其中顶点
,
,
都在坐标轴上,点
为线段
上一动点,点
为
轴下方一点,且
,
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/44e9393e-5d4f-4a89-801e-43a180f4817b.png?resizew=279)
(1)如图1,求证:
.
(2)如图2,当点
在
轴上,且点
的坐标为
,
时,求点
的坐标.
(3)若点
的坐标为
,直接写出在点
的运动过程中,
的最小值.
等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1044a0f7af65b233ace6222438983ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c6162a9d9de073dce434d9f056023a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/44e9393e-5d4f-4a89-801e-43a180f4817b.png?resizew=279)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea686619ded50d8974eab77ec49579d.png)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced922d8d5c0697c23fa4a70cb4bf8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfd1173f699d7be7d74841994567484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079dd115a4b8cbc93918a853363786dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】在
中,
的平分线交
于点
,交
的延长线于点
,分别过点
,
作
,
.
(1)如图
,求证:四边形
是菱形;
(2)如图
,当点
是
的中点时,连接
.若
,求
的长;
(3)如图
,当
是矩形时,连接
,交
于点
,连接
.若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf483fe44e313add95210780db5db27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d004acbe0ae03123b00767ea7e38223.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/11619476-4711-4fde-bcad-223d90643e1a.png?resizew=467)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ae006f399a4b83fb384de288c860b0.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.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/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25ab66d2859ddb0a19470c65b430ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.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,在四边形ABCD中,AD//BC,∠B=90°,AD=16cm,AB=12cm,BC=21cm.动点P从点B出发,沿射线BC的方向以每秒2cm的速度运动到C点返回,动点Q从点A出发,在线段AD上以每秒1cm的速度向点D运动,点P,Q分别从点B,A同时出发,当点Q运动到点D时,点P随之停止运动,设运动时间为t(秒).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/5c2f01c3-a7cd-4ada-94d9-c848f1437666.png?resizew=498)
(1)当0<t<10.5时,是否存在点P,使四边形PQDC是平行四边形?若存在,请求出所有满足要求的t的值;若不存在,请说明理由;
(2)当t为何值时,以C,D,Q,P为顶点的四边形面积等于60cm2?
(3)当0<t<10.5时,是否存在点P,使△PQD是等腰三角形(不考虑QD=PD)?若存在,请直接写出t的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/5c2f01c3-a7cd-4ada-94d9-c848f1437666.png?resizew=498)
(1)当0<t<10.5时,是否存在点P,使四边形PQDC是平行四边形?若存在,请求出所有满足要求的t的值;若不存在,请说明理由;
(2)当t为何值时,以C,D,Q,P为顶点的四边形面积等于60cm2?
(3)当0<t<10.5时,是否存在点P,使△PQD是等腰三角形(不考虑QD=PD)?若存在,请直接写出t的值.
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图1,把一个含45°角的直角三角板ECF和一个正方形ABCD摆放在一起,使三角板的直角顶点和正方形的顶点C重合;点E、F分别在正方形的边CB、CD上,连接AF,取AF中点M,EF的中点N,连接MD、MN.
(2)在(1)的条件下,请判断线段MD与MN的关系,并加以证明.
(3)如图2,将图1中的直角三角板ECF绕点C顺时针旋转180°,其他条件不变,当
,
时,求MN的长.
(2)在(1)的条件下,请判断线段MD与MN的关系,并加以证明.
(3)如图2,将图1中的直角三角板ECF绕点C顺时针旋转180°,其他条件不变,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaead91b4b6febfcdd6f995d81e550.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】已知
ABCD中,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967192350703616/2982130207088640/STEM/16a6b16f-862f-4778-8845-0bd2c88d1aad.png?resizew=381)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967192350703616/2982130207088640/STEM/fce16eb6-df39-4a70-b52e-37a7b965e5eb.png?resizew=378)
(1)如图1,对角线AC、BD交于点O,若
,求BD的长;
(2)点E是直线CD上的一个动点,直线BE交直线AC于点H,过点A作
交直线CD于点F,垂足为点M,连接FH.
①如图2,当点E是边CD上一点(点E不与点C、D重合)时,判断线段BH、AF、FH的数量关系,并证明.
② 当点E在边DC的延长线上时,若
,判断线段BH、AF、FH之间的数量关系,在图3中画出图形并直接写出结论,不需证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967192350703616/2982130207088640/STEM/16a6b16f-862f-4778-8845-0bd2c88d1aad.png?resizew=381)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967192350703616/2982130207088640/STEM/fce16eb6-df39-4a70-b52e-37a7b965e5eb.png?resizew=378)
(1)如图1,对角线AC、BD交于点O,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
(2)点E是直线CD上的一个动点,直线BE交直线AC于点H,过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.png)
①如图2,当点E是边CD上一点(点E不与点C、D重合)时,判断线段BH、AF、FH的数量关系,并证明.
② 当点E在边DC的延长线上时,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d7821a825d65e7d13576e9990d9914.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1和图2,平面上,四边形
中,
,
,
,
,
,点M在
上,且
.将线段
绕点M顺时针旋转
到
.
的平分线
所在的直线交折线
于点P,设点P在该折线上运动的路径长为
,连接
.
(1)若点P在
上,求证:
;
(2)如图2,连接
,求
的度数,并直接写出
时,x的值;
(3)如图3和图4,若点P到
的距离为2,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5156c0f70ad1f6afbdd39360a595755b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7d2a2da5144f0bf6ce091c56b3d5a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b466f14067ec8653e2cbbb2684245b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ef478c804c71ad3b374196a8ca9d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e8627cf90830c313164c8d00f52199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ee685a6d4799b0ba7e114a3906c0c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c874dcef40efe6b2a806e58a5f122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778cdfe7346279f9695a745fb780e806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e786c75c85ddad42eb3b816334ee13c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b36c130a297aa266e8d3e28c568f48.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/22/9b5ffb44-ed56-495c-b803-f55465cc0b87.png?resizew=752)
(1)若点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45326b3926ae64eb49003dfce86d7b3.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc8e50eeccced1d7f3bc52e09a7d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4c64f54a581fdcd044c0ef93879442.png)
(3)如图3和图4,若点P到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c95669cca3e47876c206b72e9f181f.png)
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
中,过点A作
,直线
与直线
、
分别交于点G、F,如果
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/f91c193e-e11b-44ba-80f0-545266e83396.png?resizew=221)
(1)求证:四边形
为平行四边形;
(2)连接
,若
,求证:四边形
为菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47053380696479fb4768b606e933b0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.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/594891df9de39b6ab6b16bd79a8b6b4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/f91c193e-e11b-44ba-80f0-545266e83396.png?resizew=221)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678fe2acbbd6ae8252a84253fca7acd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次