如图,在四边形
中,
,
,延长
到点
,
是
的平分线,
是
的平分线.
(1)如图1,当
时,求证:
;
(2)如图2,当
时,直线
交直线
于点
,问
与
,
之间有何数量关系?写出你的结论并证明;
(3)如果将(2)中的条件
改为
,那么
与
,
之间又有何数量关系?请直接写出结论,不用证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3202b1d9f838c32ab5765ce647d96b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ea718698b44ab67a5dac6206e54f0d.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d29e7c4d6216690152430b09f9cf0c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/622d1391-a3b2-45a4-84a4-30bbce1cdafe.png?resizew=409)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbcc94966860872042dfaa25cd8ef7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc18d7c5f9903ab90e40b0d9d62b105.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6db901868524464ef016565f59cbda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f9c3b578fc0598d5ec6c79404c6cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(3)如果将(2)中的条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6db901868524464ef016565f59cbda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b76dbad5ee0d2732c5d4984e5a2caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f9c3b578fc0598d5ec6c79404c6cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
更新时间:2023-07-04 00:01:28
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】将一副直角三角板按如图1摆放(
,
),点D,C,A都在直线
上,保持三角板
不动,将三角板
绕点C以每秒
的速度,顺时针方向旋转.三角板
的旋转时间为t秒,旋转一周回到原位则停止.(本题中的角均大于
且小于或等于
)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/93867a18-c438-4b36-8f59-1f07abd8758b.png?resizew=404)
(1)当
与
重合时,求t的值;
(2)如图2,
平分
,
为
的三等分线,且
.
①当
时,求
的值;
②在三角板
旋转一周的过程中,若
,直接写出t的值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf26ce298c75a551d337346674aea970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7099026716ee1821dd7d9f157dc055f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab234099db50b451eb6ec2d5b21fe1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/93867a18-c438-4b36-8f59-1f07abd8758b.png?resizew=404)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef91e8eb877e4f4bdc9e07fedca3ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17da887d0457633c6871bd5ea7989ec.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b28bd43d6858bfdaafcd11051251b66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c64b33a2b57c4e9135cebeb9a211a.png)
②在三角板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d54c15ba1b0fbb34a039b707e6b83e.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,由线段
,
,
,
组成的图形像∑,称为“∑形
”.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/3b7a1866-f1cd-4491-a390-2e899ef0f215.png?resizew=525)
(1)如图1,∑形
中,若
,则
_______
;
(2)如图2,连接∑形
中B,D两点,过点A作
,若
,
,用
的值表示
的值,并说明理由;
(3)如图3,已知
,
平分
,
平分
.若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40afe4ad45ffc486e5cfce6f48962b5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/3b7a1866-f1cd-4491-a390-2e899ef0f215.png?resizew=525)
(1)如图1,∑形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40afe4ad45ffc486e5cfce6f48962b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09269af39c61a98e0aef0c13efe1ef01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb985ac5d93b85b6299834627aa95ab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)如图2,连接∑形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40afe4ad45ffc486e5cfce6f48962b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0adba493bf7fd59158f255276d72ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6caf69e618ca0137b54b26b82ca6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c61650a2f45c28d0f63abb807307ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1432005237ada3a91efcdc3a1085b2b8.png)
(3)如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836ea820cf3732508cdd332ceb9395ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971ef52a8dc3e77a4fc2331f2a1f8439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f68e4414c9ab464bf433385c03705f.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】已知:直线AB、CR被直线UV所截,直线UV交直线AB于点B,交直线CR于点D,∠ABU+∠CDV=180°.
(1)如图1,求证:AB∥CD;
(2)如图2,BE∥DF,∠MEB=∠ABE+5°,∠FDR=35°,求∠MEB的度数;
(3)如图3,在(2)的条件下,点N在直线AB上,分别连接EN、ED,MG∥EN,连接ME,∠GME=∠GEM,∠EBD=2∠NEG,EB平分∠DEN,MH⊥UV于点H,若∠EDC=
∠CDB,求∠GMH的度数.
(1)如图1,求证:AB∥CD;
(2)如图2,BE∥DF,∠MEB=∠ABE+5°,∠FDR=35°,求∠MEB的度数;
(3)如图3,在(2)的条件下,点N在直线AB上,分别连接EN、ED,MG∥EN,连接ME,∠GME=∠GEM,∠EBD=2∠NEG,EB平分∠DEN,MH⊥UV于点H,若∠EDC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2891930502520832/2892846456938496/STEM/71d0bfd7-7a7e-4042-902c-dbd350381d73.png?resizew=463)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】如图,在平面直角坐标系中,点A(0,a)、C(b,0)满足
+|b﹣2|=0.
(1)求点A、点C的坐标;
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发向左以1单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度向上移动,点D(1,2)是线段AC上一点,设运动时间为t(t>0)秒,当S△ODQ=2S△ODP时,此时是否存在点M(m,6),使得S△ODM=3S△ODQ,若存在,求出点M的坐标;若不存在,请说明理由;
(3)点F是线段AC上一点,满足∠FOC=∠FCO,点G是第二象限中一点,连接OG,使得∠AOG=∠AOF,点E是线段OA上一动点,连接CE交OF于点H,当点E在线段OA上运动的过程中,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8506eac81f673a9ac50a5a4eae8486f1.png)
(1)求点A、点C的坐标;
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发向左以1单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度向上移动,点D(1,2)是线段AC上一点,设运动时间为t(t>0)秒,当S△ODQ=2S△ODP时,此时是否存在点M(m,6),使得S△ODM=3S△ODQ,若存在,求出点M的坐标;若不存在,请说明理由;
(3)点F是线段AC上一点,满足∠FOC=∠FCO,点G是第二象限中一点,连接OG,使得∠AOG=∠AOF,点E是线段OA上一动点,连接CE交OF于点H,当点E在线段OA上运动的过程中,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279be6ebb1ee0f39e3a4a3162b9faab4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/d6430b24-07bd-47a5-9ef3-32bbd842abd0.png?resizew=485)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图,已知AB是⊙O的直径,C是圆周上的动点,P是优弧ABC的中点.
(1)如图①,求证:OP∥BC;
(2)如图②,PC交AB于点D,当△ODC是等腰三角形时,求∠PAO的度数.
![](https://img.xkw.com/dksih/QBM/2020/11/18/2595618492579840/2598551670415360/STEM/02d084b5fc0a4fb7b28d14d500f82337.png?resizew=194)
(1)如图①,求证:OP∥BC;
(2)如图②,PC交AB于点D,当△ODC是等腰三角形时,求∠PAO的度数.
![](https://img.xkw.com/dksih/QBM/2020/11/18/2595618492579840/2598551670415360/STEM/02d084b5fc0a4fb7b28d14d500f82337.png?resizew=194)
![](https://img.xkw.com/dksih/QBM/2020/11/18/2595618492579840/2598551670415360/STEM/aab224a2f91f4385b3b770484cd671a1.png?resizew=207)
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,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2ada5ad1-652b-4d76-add3-9e025f5d3b56.png?resizew=442)
(1)如图1,求证
:
(2)如图2,点E位平面内一点,连接
、
,求证:
;
(3)如图3,在(2)的条件下,过点E作线段
,连接
,且
,
,过点B作
交
于点G,若
,
,
,且
的面积为36时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4b9b5d8fe31cc254119ed32774d577.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2ada5ad1-652b-4d76-add3-9e025f5d3b56.png?resizew=442)
(1)如图1,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
(2)如图2,点E位平面内一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5faaed1e0a8724a4db2348488457956.png)
(3)如图3,在(2)的条件下,过点E作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300c44efbf170ae0724ea353dac069a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818bac3e9ddc29bd0a0cb69519e41269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33718dff5e38643b17e8ec52bacf6985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056167b6cd7814ad2f84c07328f5dc5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a8d71c3a6c7d03ab048376ed552ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2461484894f65d176d8bf9b98b028d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次