如图,在平面直角坐标系
中,正方形
的顶点分别为
,
,
.对于图形
,给出定义:
为图形
上任意一点,
为正方形
边上任意一点,如果
、
两点之间的距离有最大值,那么称这个最大值为图形
的“正方距”,记作
.
(1)点
的坐标为__________;
(2)设一次函数
的图像是直线
,与
轴交于点
,
①求
;
②记两点的横坐标分别为
和
,若线段
在直线
上平移,
,
,
(线段
)
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e951d6d2369e8da79a793a93a66a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e87b3d349194312a934fced615e563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe280beba9666c98fb0be7c460dd81a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906f335197695af7e0e8726a87571cd3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/a56ccf27-62ae-4d57-b6e2-becbd313c9a3.png?resizew=161)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)设一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c09413f4f052a74f84d9c3666be32e4.png)
②记两点的横坐标分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c4fdbdcafe2dd605005adecbb34dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa42ddf46db6466453593ad22817f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-06-06 14:38:33
|
相似题推荐
解答题-计算题
|
适中
(0.65)
名校
【推荐1】如图,抛物线
与
轴交于
、
两点(点
在点
的左侧),与
轴交于点
,连接
、
.点
沿
以每秒
个单位长度的速度由点
向点
运动,同时,点
沿
以每秒1个单位长度的速度由点
向点
运动,当一个点停止运动时,另一个点也随之停止运动,连接
.过点
作
轴,与抛物线交于点
,点
是点
关于抛物线对称轴的对应点,连接
、
交于点
.设点
的运动时间为
秒(
).
![](https://img.xkw.com/dksih/QBM/2021/6/10/2740022338232320/2745086934425600/STEM/e7fc9e3a-24a4-4922-9dfb-adb2b46f2ce5.png?resizew=279)
(1)求直线
的函数表达式;
(2)①直接写出
,
两点的坐标(用含
的代数式表示,结果需化简);
②在点
、
运动的过程中,当
时,求
的值;
(3)试探究在点
,
运动的过程中,是否存在某一时刻,使得点
为
的中点?若存在,请直接写出此时
的值与点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a05341e22372a96b63e69813b679cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb3e1e50fc01cdf2153b61d6914eaa7.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.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/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac5c9bc238d2eb0e735b0477417ffec.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://img.xkw.com/dksih/QBM/2021/6/10/2740022338232320/2745086934425600/STEM/e7fc9e3a-24a4-4922-9dfb-adb2b46f2ce5.png?resizew=279)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)①直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c350a99fc2f19c6e10988644cf55ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)试探究在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】(1)解方程:
.
(2)下面是大壮同学进行解方程的过程,请你认真阅读并完成相应任务:
解方程:
.
解:
………………第一步
………………第二步
………………第三步
………………第四步
解得:
………………第五步
任务一:
①以上解方程过程中,主要是依据 来求解的(填“配方法”或“公式法”或“因式分解法”).
②第 步开始出现错误,错误的原因是 .
任务二:请直接写出本题的正确结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d502d976751725ee217372c29127e9.png)
(2)下面是大壮同学进行解方程的过程,请你认真阅读并完成相应任务:
解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fba6cbdb0299d0be3de03ab83b697d0.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e1d3a078186ff50b5ab3b8527e1858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de802bcd786c7e5bd38a13364074f8e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94eb90b103ea59dda89d455f9949f2af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122985da9280f784e975df7f7fc80e5e.png)
解得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fd130cfe97763c23d0b5d861df212f.png)
任务一:
①以上解方程过程中,主要是依据 来求解的(填“配方法”或“公式法”或“因式分解法”).
②第 步开始出现错误,错误的原因是 .
任务二:请直接写出本题的正确结果.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】甲、乙两个工程队共同承担一项筑路任务,甲队单独施工完成此项任务比乙队单独施工完成此项任务多用10天,且甲队单独施工90天和乙队单独施工60天的工作量相同.
(1)甲、乙两队单独完成此项任务各需多少天?
(2)设先由甲队施工m天,再由乙队施工n天,刚好完成筑路任务,用含m的式子表示n.
(3)在(2)的条件下,若每天需付给甲队的筑路费用为1500元,每天需付给乙队的筑路费用为3000元,且甲、乙两队施工的总天数不超过24天,则如何安排甲、乙两队施工的天数,使施工费用最少,并求出最少费用.
(1)甲、乙两队单独完成此项任务各需多少天?
(2)设先由甲队施工m天,再由乙队施工n天,刚好完成筑路任务,用含m的式子表示n.
(3)在(2)的条件下,若每天需付给甲队的筑路费用为1500元,每天需付给乙队的筑路费用为3000元,且甲、乙两队施工的总天数不超过24天,则如何安排甲、乙两队施工的天数,使施工费用最少,并求出最少费用.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】“戴口罩、勤洗手、常通风”已成为当下人们的生活习惯.某校为做好校园防护工作,计划采购一批
,
两种型号的口罩.已知用
元购买
型口罩与用
元购买
型口罩的数量相等,且
型口罩每个比
型口罩多
元.
(1)求
,
两种型号的口罩每个各多少元?
(2)计划购买
,
两种型号的口罩共
个,其中
型口罩的数量不超过
型口罩数量的
,求购买
型口罩多少个时,购买这批口罩总费用最低,最低费用是多少元?
![](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/98ac61206cb12cf6686bb0facf635010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def7f5a19d0608e6bb2ddaaea5a0c965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)计划购买
![](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/3248b3b36f1483ffe45c94461876a601.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/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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A,B,C,D为矩形的四个顶点,
,
,动点P,Q分别从点A,C同时出发,点P以
的速度向点B移动,一直到点B为止,点Q以
的速度向点D移动,设移动的时间为t秒.
(1)当t为何值时,P,Q两点间的距离最小?最小距离是多少?
(2)连接
.
①当
为等腰三角形时,求t的值;
②在运动过程中,是否存在一个时刻,使得
?若存在,求出t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e04947c608f4b7f67b18e8decb05f70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d291cfc6c4677d20f8674c57322b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79789686104cab147c239d152271e076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/31/212a4c94-3cd9-4192-84f5-5b6de9df20a0.png?resizew=220)
(1)当t为何值时,P,Q两点间的距离最小?最小距离是多少?
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8dcc9f79fe5f07f25447aa442ee14ad.png)
②在运动过程中,是否存在一个时刻,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccc6864987c5ee01e85c283fdca373.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,点
在以
为直径的
上,
与过点
的切线垂直,垂足为
交
于点
,过
作
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2020/4/23/2454060158771200/2454937448013824/STEM/b50a3158-f0b1-4186-a20c-4e850b7e1c4a.png)
(1)求证:
;
(2)已知
,过
作
交
于
,连接
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ececd91b4ced6773aa63972a60d000b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c60ec174cefcad3532d986c01e16a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/2020/4/23/2454060158771200/2454937448013824/STEM/b50a3158-f0b1-4186-a20c-4e850b7e1c4a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19171814ac05f2ad7a3f181cecc9a652.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c8b49825063a00b641413a52a2daca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c60ec174cefcad3532d986c01e16a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】在矩形
中,
为
的平分线.
(1)如图①,若矩形
是正方形,
,求
的长;
(2)如图②,若
,
,求
的长;
(3)如图②,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a86f34603eaf2e6a948681b831b0d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/28/e078a534-80c8-41ba-9d84-de6bf3d12702.png?resizew=260)
(1)如图①,若矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a88b719166fcc1431f876bc8c5656c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,点是平行四边形
对角线
上一点,点
在
延长线上,且
,
与
交于点
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b3f839ce88bf970aceb44ab939bd5b.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556baa479e2abdf753176ec259708e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ced64469916dfe65b5ba14339e1597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc7172954a1d878e7d47be97968cfd7.png)
(3)在(2)的条件下,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc7172954a1d878e7d47be97968cfd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次