已知,如图1,直线
,
、
的平分线相交于点M.
的度数;
(2)如图2,
,
的平分线相交于点
,请写出
与
之间的等量关系,并说明理由;
(3)在图2中作
,
的平分线相交于点
,作
,
的平分线交于点
,作
,
的平分线交于点
,请直接写出
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7724af2445c723d1392aed54d210ed3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96cf4e88a6da06b50c07bd1f563f7c1.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b59874dae8b394a4e434aa3875708a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4545a853b1ac118b29d0fdddbd7d3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e85e6939fb78dc9ea7685d5d3ffb166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
(3)在图2中作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d16fe891c1b83f076241a73f5c6cfcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22100200da5cd7f1b66d2ee2324894b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc26a65daddae06df13f05d4232adac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669bd71131448afdaef41a25c9eb5803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce951010654210fd7cc35c84d59cf9d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e10bda11e9aea0ddd045a3951cfa536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a77a729d043c8ec0b1fe06730e1e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d127918480f5da6b4c60b55ed7420b.png)
更新时间:2023-05-11 09:33:26
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】观察下面的点阵图,探究其中的规律.
摆第1个“小屋子”需要5个点,
摆第2个“小屋子”需要 个点,摆第3个“小屋子”需要 个点?
(1)摆第10个这样的“小屋子”需要多少个点?
(2)写出摆第n个这样的“小屋子”需要的总点数,S与n的关系式.
摆第1个“小屋子”需要5个点,
摆第2个“小屋子”需要 个点,摆第3个“小屋子”需要 个点?
(1)摆第10个这样的“小屋子”需要多少个点?
(2)写出摆第n个这样的“小屋子”需要的总点数,S与n的关系式.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/0ea2bd39-c1e3-451d-9b16-937f7d52c415.png?resizew=297)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】图中的图形是由边长为1的正方形按照某种规律排列而成的.
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239484964831232/2240312830926848/STEM/2bff30ba05f4428e9ea0ea7f0d5dad9b.png?resizew=554)
(1)观察图形,填写下表:
(2)推测第
个图形中正方形的个数为______(用含
的代数式表示).
(3)在这些图形中,任意一个图形周长
与它所含正方形个数
之间的函数关系式为______.
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239484964831232/2240312830926848/STEM/2bff30ba05f4428e9ea0ea7f0d5dad9b.png?resizew=554)
(1)观察图形,填写下表:
图形 | ① | ② | ③ |
正方形的个数 | |||
图形的周长 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)在这些图形中,任意一个图形周长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,已知
,且
,点C是射线
上一动点(不与点A重合),
分别平分
和
,交射线
于点B,D.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/08c87055-7fa9-4839-8a2e-8b7f63d5c2e0.png?resizew=322)
(1)求
的度数;
(2)当点C运动到使
时,求
的度数;
(3)在点C运动过程中,写出
与
之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b98afe15cf3bc412dab4d7018d7b2ae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e85bc9f73e86cfb6ce9b076433f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028012ef88546694cd67ac0d44bf6725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/08c87055-7fa9-4839-8a2e-8b7f63d5c2e0.png?resizew=322)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf1667b21a273bf5dd007d65eeda7c.png)
(2)当点C运动到使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9256a9a29859edb077189bd91d8aa93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
(3)在点C运动过程中,写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715c21f2228f0ac61aa5b7a52329eaf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8c43341c982e729dcd6c3b178865f8.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,
是
的平分线,
是
的平分线.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/a69108a6-8036-4432-8e0a-e26306a927ee.png?resizew=385)
(1)如图1,当
是直角,
时,
的度数是多少?
(2)如图2,当
,
时,猜想:
与α的数量关系;
(3)如图3,当
,
(β为锐角)时,猜想:
与α、β有数量关系吗?如果有,请写出结论,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fed1f57a835af4e9022e27603d12d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/a69108a6-8036-4432-8e0a-e26306a927ee.png?resizew=385)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36c0d4e38748fbb4a6cf5e700e5e874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec6ce73c6786d50028addff089bbb64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36c0d4e38748fbb4a6cf5e700e5e874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
(3)如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec6ce73c6786d50028addff089bbb64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105d32598bd68a883f8895c42f3da96c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27935c1ef4df2d52ac697678a3c8f39d.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】(1)问题情境:如图①,
,
,
.求
的度数.小明想到一种方法,但是没有解答完;
如图②,过点
作
,∴
.
∴
.
∵
.∴
.……
请你帮助小明完成剩余的解答.
(2)问题迁移:请你依据小明的思路,解答下面的问题:
如图③,
,点
在射线
上运动,
,
.
①当点
在
、
两点之间时,
,
,
之间有何数量关系?请说明理由;
②当点
在
、
两点外侧时(点
与点
不重合),请借助备用图画出图示,并直接写出
,
,
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67ec4cfb1e04173d7ad1c4ee5035406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3865e05698b8628fd20cbc53263c702f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
如图②,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68741489eb6ea96a8a24c6aa46f32c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08aff3ed7e8330cc7735a8a4b82c7e5.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7884f4b50f279f1171972a95190a944.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32fe18f7c7b878435f313d3c0dbb723.png)
请你帮助小明完成剩余的解答.
(2)问题迁移:请你依据小明的思路,解答下面的问题:
如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f9b3fd8dc6d9fef629c89fbdb16753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89156ad4654e5137a7f3627de6534ca.png)
①当点
![](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/fd601617f0ab200d5c80c37ab41d7323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15417741fba20d681ab4414b07339099.png)
②当点
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd601617f0ab200d5c80c37ab41d7323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15417741fba20d681ab4414b07339099.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/7f3c67d5-51f9-4ce6-a93f-4f42f8088f33.png?resizew=359)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】(1)如图1,已知AB∥CD,∠ABC=60°,可得∠BCD= 度;
(2)如图2,在(1)的条件下,如果CM平分∠BCD,则∠BCM= 度;
(3)如图3,在(1)(2)的条件下,如果CN⊥CM,则∠BCN= 度;
(4)尝试解决下面问题:如图4,AB∥CD,∠B=40°,CN是∠BCE的平分线,CN⊥CM,求∠BCM的度数.
(2)如图2,在(1)的条件下,如果CM平分∠BCD,则∠BCM= 度;
(3)如图3,在(1)(2)的条件下,如果CN⊥CM,则∠BCN= 度;
(4)尝试解决下面问题:如图4,AB∥CD,∠B=40°,CN是∠BCE的平分线,CN⊥CM,求∠BCM的度数.
![](https://img.xkw.com/dksih/QBM/2021/8/3/2777961659785216/2781789333569536/STEM/066670a85ccf4462b4f6c9309d8407c9.png?resizew=519)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在锐角三角形
中,
分别是
边上的点,
,且
交于点
.若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648c864f9f58da1dbb166fee84cfeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef022c1abfd86f8aa2402b4308a0c1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a259223f274a694d46e3eef3463039b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219f604632bd927bce98fd7ed35f040b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282d5b97a60264cf15fb74b48e4b59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/d73a5a02-32e8-48c7-be59-348b6e34c4ff.png?resizew=226)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图1,在四边形
中,
,点
在
边上,
平分
,且
.
(1)求证:
:
(2)如图2,
交
边于点
,交
边的延长线于点
,且
平分
.若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1393308bc68322f50fa29702dd412263.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8935fad8fc99c8ee3087b361b63435c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/aae59131-03d5-4519-beb2-2611bcec2274.png?resizew=247)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d276d0010fd458383ea3dd61415e1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c962fe4f47732b8e6e83d17ff2b9af13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e5612a6092e7080547c0a4f649707d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8c257f5615d30660cef4157c6b273.png)
您最近一年使用:0次