如图
(1)课本情境
课本第40页第3题:如图1,已知矩形
,
,
,动点P从点A出发,以
的速度向点O运动,直到点O为止;动点Q同时从点C出发,以
的速度向点B运动,与点P同时结束运动,出发 时,点P和点Q之间的距离是
;
(2)逆向发散
当运动时间为
时,P、Q两点的距离为
;当运动时间为
时,P、Q两点的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/22/69a0ac54-e68e-4e8a-be41-aff424672303.png?resizew=343)
(1)课本情境
课本第40页第3题:如图1,已知矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc441120bf23fcec5234196922c99246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9d0d90bf492735a174a88df5704f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79789686104cab147c239d152271e076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46df3f9b45260d6e22cd00cee72d5c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c280b0355df216440f40aefdcafcbe.png)
(2)逆向发散
当运动时间为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed245388d065efe1a72dc2176802087f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9944bbd1c12f0c6009a16a1de43bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
更新时间:2023-10-16 11:25:51
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在平行四边形
中,
,
边上的高
,点P是边
上的动点,以
为半径的
与边
交于点E,F(点E在点F的左侧).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/ea5bb813-68bd-44c1-9e83-3c978586b463.png?resizew=552)
(1)当
经过点A时,求
的长;
(2)当
经过点H时,求弦
的长;
(3)连接
,当
时,求
的半径及弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1693ab1740a2ec8981b87b7d4a1af013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f1cb417871581a5961b8af466f5d6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/ea5bb813-68bd-44c1-9e83-3c978586b463.png?resizew=552)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7174e389958fbb81ac2c2061754132b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在正方形ABCD中,点E是边BC上一点(不与点B,C重合),过点C作CF⊥AE,交AE的延长线于点F,过点D作DG⊥FC,交FC的延长线于点G,连接FB,FD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/74a2410c-47e3-4cf0-b065-0b4d4677b324.png?resizew=101)
(1)依题意补全图形;
(2)求∠AFD的度数;
(3)用等式表示线段AF,BF,DF之间的数量关系,并证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/19/74a2410c-47e3-4cf0-b065-0b4d4677b324.png?resizew=101)
(1)依题意补全图形;
(2)求∠AFD的度数;
(3)用等式表示线段AF,BF,DF之间的数量关系,并证明.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】某校“综合与实践”小组来到太原文瀛公园进行参观研学,对人民革命烈士纪念碑的高度进行了实地测量.项目操作如下:如图,测角仪的高度
米,他们分别在点C和点D处测得纪念碑顶端A的仰角分别为
,且
米,A,E,C,B,F,D,G在同一竖直平面内,且E,F,G在同一条水平线上,C,B,D在同一条水平线上,求纪念碑
的高度.(结果精确到0.1米,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2b63b9b544fda9d9f4324e715c4de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5f9da5ef52e0b79dae90e01f9396dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cc2dc858540ee21713a63dad8d0ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c748d23f6326c90a589b1345d670fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/7cf2c351-a585-48a8-8bd0-f4d4e81c1b68.png?resizew=411)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,
是正方形
对角线
上一点,
,
,垂足分别为
,
.
(1)求证:
;
(2)若正方形的边长为
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdd2adb9ba62d9ff017e2e743aed277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edadd9995393ece0d7b7bf4801504bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/14/78b2cc4e-e491-48ee-a2b6-6fd2cb11e976.png?resizew=123)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f1aadf4291d961038e8db73a1b4098.png)
(2)若正方形的边长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2c06207565e9fa6a288a788e4ab2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8355f0228a2f9b453a9ce8ea1b3910ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次