1 . 如图,在
中,点
,
分别在边
、
上且
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/7aa4c401-b9ea-4d83-a860-9c08ecbfb79d.png?resizew=231)
(1)求证:
.
(2)若点
为
中点,
,
的面积为8,求
的面积.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882c0e9a669fb8d3c5f0bf36b23137e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/7aa4c401-b9ea-4d83-a860-9c08ecbfb79d.png?resizew=231)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585f34b8f80462845450a25f91a285d1.png)
(2)若点
![](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/1c3f6194fcbb4378188b6a1ef6121c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
2 . 贴春联是中国传统习俗,晓红老家有个圆形拱门,每年都会贴上长长的春联,看上去非常喜庆.晓红用圆弧近似模拟拱门,经测量发现、
的拱高
和其所对的弦
都是2m,
所对的圆心角是
,弦
与春联的底端平齐,E点正好是春联外侧最高点,则春联的外侧长度大约是______ m.(参考数据
;结果按四舍五入法精确到0.1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea1690ef9f2d5668161eb90984f87c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15289c707e0c7149a270802733519004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88148bfd93073fc50756c5ecbf5ff45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/930f7e14-2ce4-47d7-be35-63146502a7c1.png?resizew=475)
您最近一年使用:0次
名校
3 . 问题提出
(1)如图1,
是矩形
的边
上的一点,
于点
,求证:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/cc1d19c8-0df8-440f-a601-6a06810bdc89.png?resizew=128)
问题探究
(2)如图2,将矩形
折叠,使顶点
落在边
上的点
处.已知折痕与边
交于点
,求证:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/02f8a0e6-4c30-4e32-b25a-e3c46c4acdab.png?resizew=118)
问题解决
(3)如图3,菱形
是一座避暑山庄的平面示意图,其中
,
米,现计划在山庄内修建一个三角形花园
,点
,
分别在线段
,
上,根据设计要求,需满足
,且
,问能否建造出符合要求的三角形花园
?若能,请找出点
,
的位置(即求出
与
的长);若不能,请说明理由.
(1)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876bb8ce0ca53475fa091ffd18bdc94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd5caa8daed67881e77dde9d2634a44.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/cc1d19c8-0df8-440f-a601-6a06810bdc89.png?resizew=128)
问题探究
(2)如图2,将矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1220a0165f7134ea796af336e02b96b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/02f8a0e6-4c30-4e32-b25a-e3c46c4acdab.png?resizew=118)
问题解决
(3)如图3,菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a645c8c1f86c704eb42b1f5f8e182f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1de7da3ab92e70f135ea628a691167.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4b5a4e5b88a994c316d7d0d667c6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc0720b983c117f8742cb87881dc4e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1de7da3ab92e70f135ea628a691167.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/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/f9bb64ee-0a94-45b9-852f-615e1de20eb5.png?resizew=140)
您最近一年使用:0次
2024-01-29更新
|
41次组卷
|
2卷引用:陕西省西安市碑林区第二十六中学2023-2024学年九年级上学期期末数学试题
4 . 如图,在正方形
中,按如下步骤作图:①连接
相交于点
;②分别以点
为圆心、大于
长为半径画弧,两弧相交于点
;③连接
,交
于点
;④连接
,交
于点
.若
,则
的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d452f74791f58e8400cb8d2d6038dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97be8206012b8d5b1402dfa5e9761196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/db5df6b5-8195-46a9-8620-32fecfffd3ed.png?resizew=93)
您最近一年使用:0次
5 . 如图,在
中,点
在边
上,
,
,
,求
的长.
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b90df41712a0718256d4d42a9e4acdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/25fc2892-c0f7-4ff9-b2b0-4502470ccc4c.png?resizew=153)
您最近一年使用:0次
6 . 如图,点F是的边
上一点,直线
交
的延长线于点E,则下列结论
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 综合与实践
问题情境
在
中,
,点O是
的中点,D为
内一点,连接
,将线段
绕着点O旋转
得到
,连接
.
探究证明
(1)如图1,延长
交
于点E,若
.求证:
;
(2)如图2,连接
,交
的延长线于点G,连接
,若
,用等式表示线段
之间的数量关系,并证明;
拓展提升
(3)如图3,在(2)的条件下,
与
交于点H,若
,
,
,请求出
的长度(直接写出答案).
问题情境
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d6e9a08075156a32fbf5571f94e50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff6005f926665a926c07ad62e0f032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
探究证明
(1)如图1,延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d1e129bc533d229524e985ad9a1f41.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebba1f34ceeeda357c6796d4dfc4a19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deac72df325262c458af3adca9d08542.png)
拓展提升
(3)如图3,在(2)的条件下,
![](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/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25936291abb6432ed5a710ebf0ea195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7976a5206126665cc0d66deae52b3b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/048cf7b6-94e2-4f0e-b4fd-47d472b51c1a.png?resizew=406)
您最近一年使用:0次
8 . 如图,在
中,点E是
的中点,连接
并延长交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/bf80c2b8-f897-41d4-8bce-f1a8f8858d3c.jpg?resizew=198)
(1)求证:
;
(2)点
是线段
上一点,连接
,满足
平分
,
交
于点
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/29/bf80c2b8-f897-41d4-8bce-f1a8f8858d3c.jpg?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14833dbeed409b33acd4c9071fd0be36.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11667abcb2759f301391b9850352be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7a82bf203df79ba6c0ef80026198d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11667abcb2759f301391b9850352be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3da257beb296514b57a1e3169b099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00e760bec2dc824fbb59beaa204a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3407e83df0d037d628061f7a89b6b8a.png)
您最近一年使用:0次
9 . (1)如图1,
是
的中线,点E是
边上一点,
交
于F,交
于G.证明:
平分
.
(2)如图2,
是
的中线,点M是
的中点,求
的值.
(3)如图3,若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476b0b8378f4b0f73f3dc5d84d89f616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/659974e3997a419f877a6adba468f515.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16b33304b140afb804421522fa9ab30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d551fb6fcd71053e0a5f9ed2e6ded691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f7c1fd715395858fef59913b8d9262.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/44b38c3f-d4e8-47c6-bdc8-8aa611d1915e.png?resizew=417)
您最近一年使用:0次
10 . 如图,在
,过点D作
,交
的延长线于点H.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e09660e8bff0beac4eb769f8145e94b.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd74f191f219648b416c5f0bee76223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e36fe861dbf3d8e285110a283c4c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e09660e8bff0beac4eb769f8145e94b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/4ea3f002-49c3-4c24-b048-d481dc7f3547.png?resizew=162)
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