1 . 我国古代数学著作《九章算术》中的“井深几何”问题:“今有井径五尺,不知其深,立五尺木于井上,从木末望水岸,入径四寸,问井深几何?”它的题意是:如图,四边形
是矩形,已知
尺,
尺,则井深
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/66164308-339a-4899-92c9-7dd43fe31bd4.png?resizew=79)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e096f87473d0b6b6d531ba22e5a7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8152fb2375334bd63b3b1c48d67fa041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/66164308-339a-4899-92c9-7dd43fe31bd4.png?resizew=79)
A.1.25尺 | B.56.5尺 | C.57.5尺 | D.62.5尺 |
您最近一年使用:0次
2 . 如图,在矩形
中,
分别为边
的中点,
与
分别交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/32a8f321-da85-4889-b1e1-744735aaa9a4.png?resizew=115)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072ccc34d809568565d2b3a92b77f26b.png)
________ .
(2)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7aafb107c3ea00ffd5308a67f18f9a1.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea77ba313fcc751481ac1ca214df3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/32a8f321-da85-4889-b1e1-744735aaa9a4.png?resizew=115)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072ccc34d809568565d2b3a92b77f26b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e321eabc09351370d085eb99e2ac19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7aafb107c3ea00ffd5308a67f18f9a1.png)
您最近一年使用:0次
3 . 如图,
是
的中位线,若
的面积为
,则为四边形
的面积( )
![](https://img.xkw.com/dksih/QBM/2024/1/27/3420206161649664/3421565912924160/STEM/bf53ef03ec8a454bbc9666701be633c2.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefe4a3e7a7fa195ed6a6712447639b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1152187fd0508870ac10b9a498d13cdc.png)
![](https://img.xkw.com/dksih/QBM/2024/1/27/3420206161649664/3421565912924160/STEM/bf53ef03ec8a454bbc9666701be633c2.png?resizew=138)
A.8 | B.10 | C.12 | D.14 |
您最近一年使用:0次
2024-01-31更新
|
82次组卷
|
2卷引用:福建省泉州市德化县2023-2024学年九年级上学期期末数学试题
4 . 【初步探究】
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/fca8f2ee-21da-4b32-a946-d6973c181694.png?resizew=321)
(
)如图
,在
中,点
分别在
上,连接
.已知四边形
是平行四边形,
.
①若
,求线段
的长;
②若
的面积为
,求平行四边形
的面积.
【深入探究】
(
)如图
,某工厂有一块形如四边形
的铁皮,其中
,
,
,
.为节约资源,现要从这块铁皮上截取矩形铁皮
(阴影部分)备用,点
分别在
上.设矩形铁皮的边
,矩形
的面积为
,求出
与
之间的函数关系式,并求矩形
面积的最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/31/fca8f2ee-21da-4b32-a946-d6973c181694.png?resizew=321)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5b88ec996d2d117987e7303cefe4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504f0c0547a40bdbd23769f01e34a547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833ee84968e2c903b6350c23943b4fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e904f5b316b9ba89599fb789dd9b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6cfd1488eec3da4331a52f75a00e0a.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e904f5b316b9ba89599fb789dd9b09.png)
【深入探究】
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b8890120a7d3d628fb7b5b94a24001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b5f8f2248a723b470aef2db30342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e9a3d51bc81413504d2ec0037d694a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241f9ef86cd0a902cbadaf336767dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8d0dc5056966d72b15f753f8ca2e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780ec8874ff3247f9a5227c8a6c5f311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7ee0ef8945ba1b90e59aed7cab889.png)
您最近一年使用:0次
5 . 如图,在矩形
中,
为矩形
的对角线,点
分别是
的中点,连接
交
于点
,连接
交
于点
.连接
,则
的值是( )
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439ea8582a416b126849e035d12892e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/a6dc41ab-3faf-442f-8c0b-ee2b6b566155.png?resizew=165)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 如图,在
中,点
分别在边
上,
,
的面积为12,则
的面积是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476b0b8378f4b0f73f3dc5d84d89f616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d150a281409c1fa2518cb88e42543817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/747423d5-b747-408d-81cf-f4bd05fbf7a8.jpg?resizew=106)
您最近一年使用:0次
7 . 如图,在正方形
中,
是
的中点,
是
上一点,且
,下列结论:①
;②
;③
;④
.其中正确的是( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c1441979b0a396730e612eb9ac408c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1bc56e64379dd4ec9e627e53648c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c3316975ecd3a43058c29ed0a8e0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3327f9755308e9be1ff45f52f9ed0b.png)
A.①③④ | B.①②③ | C.②④ | D.②③ |
您最近一年使用:0次
8 . 如图,在
中,
,
,
,
,
是
的两条高.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/80f1a5a4-325b-4d2e-9fb2-0cde8aec36c4.png?resizew=153)
(1)线段
的长为______ .
(2)连接
,
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/80f1a5a4-325b-4d2e-9fb2-0cde8aec36c4.png?resizew=153)
(1)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f4f8e27f307a8a998a3335ba7d1bb4.png)
您最近一年使用:0次
9 . 如图,在
中,
,
是边
的三等分点,
,
是边
的三等分点,若
的面积是1,则四边形
与四边形
的面积差是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/c6919855-9cf5-49c1-9cf7-8d3a5e25dd45.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31ede5e80640e558fdc7d4ba025cf83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82901484b0b4b192cdd45a88c6163aa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/c6919855-9cf5-49c1-9cf7-8d3a5e25dd45.png?resizew=139)
A.2 | B.4 | C.6 | D.8 |
您最近一年使用:0次
10 . 【阅读理解】
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/4dcac3af-4195-4190-a8aa-197efe3507bb.png?resizew=505)
(1)如图1,点A,B,C在同一直线上,
于点A,
于点C,
,
,求证:
;
【拓展应用】
(2)如图2,在平面直角坐标系
中,点
,
,分别连接
,
,设
与x轴正半轴的夹角为
,
与x轴正半轴的夹角为
,求证:
;
【能力提升】
(3)如图3,在平面直角坐标系
中,点
,
轴于点F,设点G为x轴上的一动点,当满足
时,求OG的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/4dcac3af-4195-4190-a8aa-197efe3507bb.png?resizew=505)
(1)如图1,点A,B,C在同一直线上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1326e85ff750d882de9ea65c29e3d3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6240d83351b156ab5a8c0e2a9f0e277c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17101383eb0787edaaa35adfcd20d5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8bee1c892473f71a723860b933e234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e7fa7a6af291b7c23d2f1f13966156.png)
【拓展应用】
(2)如图2,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78eba6f91d97cea1dfd73bae53e7b689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f3aec1dc12dc085258842c804e597b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23fd0b7f702a8a0736b231b634075b1f.png)
【能力提升】
(3)如图3,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209e6314c0e22412e9661c80d250634b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf783d3172debc69f963495e5bff78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f30538734e27326e21d245076b11ded.png)
您最近一年使用:0次