【问题提出】
(1)如图1,
是菱形
的对角线,则
______
;(填“
”“
”或“
”);
【问题探究】
(2)如图2,正方形
的边长为4,点
在
的延长线上,且
,过点
的直线分别交边
于点
,若
恰好将正方形
的面积平分,求
的长;
【问题解决】
(3)某公园有一片空地,其形状如图3所示,由矩形
和以
为直径的半圆构成,点
在
上,公园规划人员欲将这块空地打造成花海供人们观赏,已知花海的人口在半圆上的点
处,
,要在
边上找一点
,再沿
修一条小路(小路的宽度忽略不计),使得
将这块空地分成面积相等的两部分,用于种植不同的花,已知
,请你在图3中找出点
的位置,并计算出小路
的长.(结果保留根号)
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbff84327e964f912a54032e76ccc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b0ee4d3014800b3664cec93be49a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
【问题探究】
(2)如图2,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b20cd1a43264e4533d4980c99fdad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28d2790a97390935125aa897417f970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
【问题解决】
(3)某公园有一片空地,其形状如图3所示,由矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58f48fd4232557e0e88d7bc3e59f038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61036b719ddcc18445f3a6c5a63d811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
更新时间:2024-04-17 15:57:51
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】【试题再现】如图 1,
中,
, 直线l过点C, 过点A、B分别作
于点D,
于点E, 则
(不用证明).
(1)【类比探究】如图2, 在
中,
, 且
,上述结论是否成立?若成立, 请说明理由:若不成立, 请写出一个你认为正确的结论.
(2)【拓展延伸】如图3, 在
中,
, 且
, 猜想线段
之间有什么数量关系?并证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149d217efaf5090696904003ec06393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13b505788d3d02bf232ac637fc3a8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e72d26eae9a5470ac982541c609b109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dc287e73e249f4c807420b826624ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/ac1d836b-3ace-453f-af89-4ca5167a36f7.png?resizew=472)
(1)【类比探究】如图2, 在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd97844a2deea75344e7d91440f971e.png)
(2)【拓展延伸】如图3, 在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d02e73788acf2e77ad79aa1a6586cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd97844a2deea75344e7d91440f971e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a33e41acba2b91da3d7bc21a01e58f0.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐2】在□ABCD中,∠ADC的平分线交BC于点E,交AB的延长线于点F,以BE,BF为邻边作
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/f8626881-15ab-4500-a63f-06872bb08f8b.png?resizew=461)
(1)如图1,求证:
是菱形;
(2)如图2,若
,连接BG,交EF于点O,连接OA,OC,AC,求OA的长;
(3)如图3,若
,连接AC,AG,求∠GAC的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c65390906bd7874a46ccbc55fe75312.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/f8626881-15ab-4500-a63f-06872bb08f8b.png?resizew=461)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c65390906bd7874a46ccbc55fe75312.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472c690d941789d0ac9fcefe0ade2e44.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26eba7e649fade39fd2d0b6ef4ac5ffd.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系
中,直线
分别与
轴、
轴交于
点,直线
与
轴相交于点
,点
在第四象限,
.
的解析式;
(2)当
时,求点
的坐标;
(3)在(2)的条件下,已知点
在
轴上,点
在直线
上,如果以点
为顶点的四边形是平行四边形,请直接写出点
和点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c48c439ef919695d2660d0a63e6eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205e468a82a5cb7b2a31456c5fccf85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a22940cd2a129350c952ad7dc6db924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd4388a9c73e01c54985ddd734a9dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)在(2)的条件下,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d7665cd4eb96b58012a85ff444c29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知,如图,在矩形ABCD中,
,
,对角线AC,BD交于点O.点P从点A出发,沿AD方向匀速运动,速度为1cm/s;同时,点Q从点D出发,沿DC方向匀速运动,速度也为1cm/s:当一个点停止运动时,另一个点也停止运动:联结PO并延长,交BC于点E,过点Q作
,交BD与点F,设运动时间为
.
![](https://img.xkw.com/dksih/QBM/2021/11/3/2843181334650880/2846146663571456/STEM/f61206d9-fe14-441e-b0dd-05544f8ca017.png?resizew=253)
(1)当t为何值时,
是等腰三角形;
(2)设五边形OECQF的面积为
,求S关于t的函数关系式;
(3)在运动过程中,是否存在某一时刻t,使OD平分
?若存在求出t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbdc4c5bbda8fab18359ab53cebc9d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afc22712498724b28f172a9893157de.png)
![](https://img.xkw.com/dksih/QBM/2021/11/3/2843181334650880/2846146663571456/STEM/f61206d9-fe14-441e-b0dd-05544f8ca017.png?resizew=253)
(1)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b4dcc093218443f71a046b6df94bbe.png)
(2)设五边形OECQF的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab9091bc1886a3fd3d17160b2d41ded.png)
(3)在运动过程中,是否存在某一时刻t,使OD平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f5dc1d043a4909a40238ff5b590c77.png)
您最近一年使用:0次
解答题-作图题
|
较难
(0.4)
名校
【推荐1】点
为正方形
的边
延长线上一点,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/a3c45e5a-4cc3-47df-b01f-0fe0f3a82769.png?resizew=454)
(1)如图1,当
时,连接
,则
_____________°,
____________;
(2)如图2,将射线
绕点
逆时针旋转
得到射线
,作
于点
,在射线
上取点
,使得
,连接
.
①依题意补全图形;
②猜想
的度数,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/a3c45e5a-4cc3-47df-b01f-0fe0f3a82769.png?resizew=454)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c6fc74959e799ca98a19bcc92a803c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a9eca02ecb768ffa9c517a606758f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474d8c089759922188afc889fe7d67cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1039601edd7326b628a3201a3d4af948.png)
(2)如图2,将射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f76c257bd94bf35237d705aefce2347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7e37ba075c1ff468afa5087fc5a600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ed6492e60e80c704fdbc388c8435ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
①依题意补全图形;
②猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.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】正方形
中,点P是对角线BD上一点,连接
,过点P作
的垂线分别交边
,
于E,F,交
的延长线于点G,作
交
于点H
(1)求证:
;
(2)连接
,
.
①求证:四边形
是矩形;
②如果点E是
的中点,
和
的面积分别是
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294e920268f22ddb77c914f113951225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/000c5988-9f25-45fe-b004-485f669f6fb2.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1508b5d4e732bacf1a731847ad2e79e5.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
①求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dce64ad671c61ae83a40b0d1338a77.png)
②如果点E是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbf5459b20ca890a47ebf8d51d90cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95558cdc4ce1e6d9462d2e91c070655f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】如图1,矩形
中,点
在
上,连接
,作
分别交
于
,
于
.
(1)若
,
,求
的长;
(2)如图2,取
的中点
,连接
交
于
,若
.
①求证:
;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ed13a7bd532bd39af5e5ad7493a2c.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/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/fbbd1bc3-e2dc-4152-8641-913c8d2c2cf1.png?resizew=305)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4df5c5be13044facff177a5831435b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)如图2,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be9612bf96bdb4aba4393fe185e7e62.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b70d6823287307ac8259b9fda74192.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d1535de567956e44b2bbc11f74f1db.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】二次函数y=﹣x2+bx+c与x轴分别交于点A和点B,与y轴交于点C,直线BC的解析式为y=﹣x+3,AD⊥x轴交直线BC于点D.
(1)求二次函数的解析式;
(2)M(m,0)为线段AB上一动点,过点M且垂直于x轴的直线与抛物线及直线BC分别交于点E、F.直线AE与直线BC交于点G,当
时,求m值.
(1)求二次函数的解析式;
(2)M(m,0)为线段AB上一动点,过点M且垂直于x轴的直线与抛物线及直线BC分别交于点E、F.直线AE与直线BC交于点G,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac4f324b979a7f4b2d8b229972364f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/c42306ee-7d5f-42bb-9ad5-8e1eceb20d64.png?resizew=229)
您最近一年使用:0次