如图,在
中,
和
的平分线相交于点
,过点
作
交
于
,交
于
,过点
作
于
.
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388309208948736/2389487692881920/STEM/10697c2bcb9b41568270676f2e3d116b.png?resizew=163)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a60dcb315cac91b4d73339a01bb1d26.png)
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115e89753ffd298a60c1abff8793a802.png)
(3)若
,
,请用含
,
的代数式表示
的面积,
___________(直接写出结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7251d14111473460f02a65c7531c51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2020/1/30/2388309208948736/2389487692881920/STEM/10697c2bcb9b41568270676f2e3d116b.png?resizew=163)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a60dcb315cac91b4d73339a01bb1d26.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115e89753ffd298a60c1abff8793a802.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea64b61bba2211068b9057ff24d77fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccc7980dd8ee24168aab085b49dcee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7807f6a0d316671ed34c23e32fc7408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620b31b9d990f7cae66cf6dd21917e5b.png)
更新时间:2020-02-01 09:28:04
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图1,在平面直角坐标系中,
,
,
,且满足式
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/bff13d44-1d4f-44b9-8726-f6dabc2967fc.png?resizew=239)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/bd4548cb-8ee7-48d7-885c-56e8c13abc47.png?resizew=229)
(1)求出m,n的值.
(2)在坐标轴上存在一点M,使△COM的面积等于△ABC的面积的一半,求出点M的坐标;
(3)如图2,过点C作CD⊥y轴交y轴于点D,点P为线段CD延长线上一动点,连接OP,OE平分∠AOP,OF⊥OE,当点P运动时,
的值是否会改变?若不变,求其值;若改变,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69db4c233799592789090d874523c857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7025ecffe0ca6b047615ca24e8f3011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72dde95c9e463b311ea7be615297cd20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c357b35e8c908366580535a2cc5474.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/bff13d44-1d4f-44b9-8726-f6dabc2967fc.png?resizew=239)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/5/bd4548cb-8ee7-48d7-885c-56e8c13abc47.png?resizew=229)
(1)求出m,n的值.
(2)在坐标轴上存在一点M,使△COM的面积等于△ABC的面积的一半,求出点M的坐标;
(3)如图2,过点C作CD⊥y轴交y轴于点D,点P为线段CD延长线上一动点,连接OP,OE平分∠AOP,OF⊥OE,当点P运动时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f2a7ebf0bb96fbe9fc9dabb63a8c12.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】问题提出如图(1),在
和
中,
,
,
,点
在
内部,直线
与
交于点
,线段
,
,
之间存在怎样的数量关系?
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/8c0935cc-1d2a-4562-a51b-d9f0d4f929a9.png?resizew=608)
问题探究:
(1)先将问题特殊化.如图(2),当点
,
重合时,直接写出一个等式,表示
,
,
之间的数量关系;
(2)再探究一般情形.如图(1),当点
,
不重合时,证明(1)中的结论仍然成立.
问题拓展:
如图(3),在
和
中,
,
,
,点
在
内部,直线
与
交于点
,直线
与
交于点
,点
为线段
上一点,
,
与
交于点
,若
,
,则
_____________(用含
,
的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f354923a8254c212b1c4a3d64a83a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ca0f2b2b40440365fcce22ac32c0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ec8abe5af19094282bf63a98fde427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/8c0935cc-1d2a-4562-a51b-d9f0d4f929a9.png?resizew=608)
问题探究:
(1)先将问题特殊化.如图(2),当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)再探究一般情形.如图(1),当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
问题拓展:
如图(3),在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f354923a8254c212b1c4a3d64a83a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ca0f2b2b40440365fcce22ac32c0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ec8abe5af19094282bf63a98fde427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.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/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d202672c71fb0b607418bbe909452f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6850c63b25d3914931ac39b9291a5be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e374298a003f568886dc459f02a41a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06278a7e88854746bb089ad48582613d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
解题方法
【推荐1】已知,射线
于点A,
,等腰直角
的顶点D,E分别在射线
和
上,
,
,过点
作
于点
,延长
交射线
于点
.
,
在线段
,
上.
①若
,
,求
的度数;
②证明:
;
(2)若
,
,请直接 写出线段BE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6bb959f0a7b0b26426796ec8505b339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ceba85d3a1bd8ef3c92e63697e17af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881b0d47457539e98db917b95c186eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c1939e7ec66a6f069f0d9f83580a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d3f24289a028aa1395084888ba49aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e47634c8bc677c86728a212247896b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.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/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb3feccc88a00ae541b8367327def41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce06adac33b70a4b4889712ad4523cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5754ed0cdc3305585f34eb0c8345fad.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5656c941dda21fb9d84225488a83f64c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0adce35628a0dc8fc0e3cba77f675a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0b6eaea0c7f07d115c65d7450d133e.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
解题方法
【推荐2】如图1,点
、
分别在直线
、
上,
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/18/2723786727112704/2781985899569152/STEM/23abf300a1474752ac7cf000e02b34a6.png?resizew=486)
(1)求证:
;(提示:可延长
交
于点
进行证明)
(2)如图2,
平分
,
平分
,若
,求
与
之间的数量关系;
(3)在(2)的条件下,如图3,
平分
,点
在射线
上,
,若
,直接写出
的度数.
![](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/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b4b1da7b87c7389cb50832f39ed7fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
![](https://img.xkw.com/dksih/QBM/2021/5/18/2723786727112704/2781985899569152/STEM/23abf300a1474752ac7cf000e02b34a6.png?resizew=486)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899a17a0a4c7db837d0f9013e1cf969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bbb90511e761c0aff7bc4673ab5d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e4930d26304c351db7a6b56f31ba50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bbb90511e761c0aff7bc4673ab5d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
(3)在(2)的条件下,如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce470f6819bc8885da0b8c1b0e84ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97a817ba3f469d761cb25b26ef778a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223702ba84ec942874627d6fe5b14b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bbb90511e761c0aff7bc4673ab5d61.png)
您最近一年使用:0次
【推荐3】在△ABC和△DEF中,将△DEF按要求摆放,使得∠D的两条边分别经过点B和点C.
(1)当将△DEF如图1摆放时,若∠A=50°,∠E+∠F=100°,则∠D= ;∠ABD+∠ACD= .
(2)当将△DEF如图2摆放时,∠A=m°,∠E+∠F=n°,请求出∠ABD+∠ACD的度数(用含m、n的代数式表示).
(3)能否将△DEF摆放到某个位置,使得BD、CD同时平分∠ABC和∠ACB.若能,求出∠A、∠E、∠F满足的关系?若不能,请说明理由?
(1)当将△DEF如图1摆放时,若∠A=50°,∠E+∠F=100°,则∠D= ;∠ABD+∠ACD= .
(2)当将△DEF如图2摆放时,∠A=m°,∠E+∠F=n°,请求出∠ABD+∠ACD的度数(用含m、n的代数式表示).
(3)能否将△DEF摆放到某个位置,使得BD、CD同时平分∠ABC和∠ACB.若能,求出∠A、∠E、∠F满足的关系?若不能,请说明理由?
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/17/4e07e646-87de-443d-92b1-a4f88e29e690.png?resizew=310)
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
【推荐1】如图,在四边形
中,
,连接
,作
于点
.
(1)
是
边上的点,过点
作
于点
,在图中求作点
,使得
;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)的条件下,连接
交
于点
,并延长
交
的延长线于点
,连接
.若
,探究线段
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/39d1373c-ecb7-4781-b798-50b89385c49b.png?resizew=205)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/5ce1335e489c2b0835d7e16ea765e1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de1d1c1e76180fe060ea48fc55bf3ce0.png)
(2)在(1)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb78083d96ab710471d98edf21e1c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd312ed861beedc86ffe95dc3ea8203.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
中,
,
,
,点P从点A出发,以每秒5个单位的速度沿
向终点C匀速运动.当点P不与点A、C重合时,过点P作
交
于点Q,以
为边向上作正方形
,设正方形
与
重叠部分面积为S(平方单位),点P的运动时间为t(秒).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/e3438c62-da03-491a-9cf2-f258ce49379c.png?resizew=133)
(1)用含t的代数式表示线段
的长度为______;
(2)当点N落在线段
上时,求t的值;
(3)求S与t之间的函数关系式;
(4)当点N恰好落在
的角平分线上时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/e3438c62-da03-491a-9cf2-f258ce49379c.png?resizew=133)
(1)用含t的代数式表示线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)当点N落在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)求S与t之间的函数关系式;
(4)当点N恰好落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次