1 . 如图,在
中,
,
,D、E在斜边
边上,
,若
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1af32e267e35ef79bcb8df5d169283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ee17bdc2c5af468bc1cb0f857a4ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.6 | B.4![]() | C.4 | D.3![]() |
您最近一年使用:0次
2024-04-10更新
|
124次组卷
|
6卷引用:2024年贵州省黔西南州部分学校中考数学一模模拟试题
2 . 如图,将四根长度相等的细木条首尾相连,用钉子钉成四边形
,若
,
,则B,D两点间的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282836891c171f38f62306a52106fd32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/10/dea53935-0f1a-4531-992a-c5a39762c528.png?resizew=174)
您最近一年使用:0次
3 . 如图,在
中,
,以
为直径作
交
于点D,过点O作
的平行线
,交
于点E,作射线
交
的延长线于点F,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/9aded174-b880-4a03-8380-04f4a8e642d5.png?resizew=231)
(1)求证:
是
的切线;
(2)若
,
,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/9aded174-b880-4a03-8380-04f4a8e642d5.png?resizew=231)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78220bdc4f0d3b1b0919f6a147d85a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
您最近一年使用:0次
4 . 如图,已知在
中,
,以直角边
为直径作
,交斜边
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/f956e346-493c-4a37-b343-770b0f476b9d.png?resizew=195)
(1)若
是
的中点,连接
,求证:
与
相切;
(2)若
,
,求边
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/f956e346-493c-4a37-b343-770b0f476b9d.png?resizew=195)
(1)若
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
5 . 如图,在矩形
中,
于点
,交
于点
,过点
作
的角平分线交
于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/6c5ae567-9a9b-4484-9247-1896c857fb5e.jpg?resizew=134)
(1)求证:
;
(2)求
;
(3)若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90026b96116424a245b335b1adb886b.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/3d0d1fbb0d855b9c7f84850bca5bbb56.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/6c5ae567-9a9b-4484-9247-1896c857fb5e.jpg?resizew=134)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922c701f4f25d06bbdcf360b40ee9693.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67868a097fc9997cfc7fbbbfb7dcb2d3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49437f474e5805688dff21ded2d1fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6240d4cf0fb44aa1e6bdaf2a4bdfb37e.png)
您最近一年使用:0次
6 . 如图,在
中有一个内接四边形
,延长
与
的延长线相交于点
,求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcfbe4dd81a9cd85b2c5e6e10176306.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d831c9ba6d18774540e2aaa29132fec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a467d2cad75d39b67c8204df70239147.png)
您最近一年使用:0次
7 . 探究式学习是新课程倡导的重要学习方式,某兴趣小组拟做以下探究.
在
中,
,
,D是
边上一点,且
(n为正整数),E是
边上的动点,过点D作
的垂线交直线
于点F.
【初步感知】
(1)如图1,当
时,兴趣小组探究得出结论:
,请写出证明过程.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/a57186cb-bf01-45c1-a8e5-dfce5ba356bb.png?resizew=197)
【深入探究】
(2)如图2,当
,且点F在线段
上时,试探究线段
之间的数量关系,请写出结论并证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d06f3aba-0df2-4bb4-ace0-0b4179366fdd.png?resizew=191)
【拓展运用】
(3)请通过类比、归纳、猜想,探究出线段
之间数量关系的一般结论(直接写出结论,不必证明).
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825671c551cc4593793b40c43d46757a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
【初步感知】
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36978e392c8df4668ed3f74641febbfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/a57186cb-bf01-45c1-a8e5-dfce5ba356bb.png?resizew=197)
【深入探究】
(2)如图2,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30bf3421adec0637c315309c2ea9a24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d06f3aba-0df2-4bb4-ace0-0b4179366fdd.png?resizew=191)
【拓展运用】
(3)请通过类比、归纳、猜想,探究出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30bf3421adec0637c315309c2ea9a24.png)
您最近一年使用:0次
8 . 如图,以点O为位似中心,把
的各边长放大为原来的2倍得到
,下列说法中,错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/79277c30-4899-4923-b805-b5ea9efd08b4.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/79277c30-4899-4923-b805-b5ea9efd08b4.png?resizew=195)
A.![]() | B.![]() |
C.![]() | D.A,O,![]() |
您最近一年使用:0次
2024·贵州·一模
9 . 如图,在等腰三角形
中,
,以
为直径的
与
交于点
,
,垂足为
,
的延长线与
的延长线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/7c850fc9-66ef-4ef1-8486-9a6d7dbf074d.png?resizew=169)
(1)求证:
是
的切线;
(2)若
的半径为5,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/7c850fc9-66ef-4ef1-8486-9a6d7dbf074d.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
10 . 如图甲,正方形
和等腰直角
有公共点
,点
是直线
上一动点,连接
,取
的中点
,连接
.
(1)【方法体会】线段
,
有着特别的关系,请依据思路将横线处补充完整.
解:在图甲中,将线段
延长至点
,使
,连接
,
,交
于点
.
则:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a1e0c08b99addcc37e4176f5882e8f.png)
即:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9195d58eb86b8cfacc37f3782eec27a7.png)
在
和
中:
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c20968b91619283dd0bf4810cd3086.png)
∴______(
)
∴
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81f683bfa5fb4f5d901503bfa7ccf26.png)
设
,
交于点
,
又∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e655be1d2908b97ed4df568a10177013.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6d4df1654d5d59864a7d4fd3bd27dd.png)
∴
,即![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79216c6a32bb699aeb36144da020490.png)
又∵点
是
中点,点
是
中点
∴
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14985aca12e83ce0d6400b65857c9a0.png)
又∵
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79216c6a32bb699aeb36144da020490.png)
∴
,
的位置关系是
_____;数量关系是______.
(2)【探索发现】如图乙,
交
于点
,交
于点
,交
于点
,当点
与点
重合时,求
:
的值;
(3)【拓展运用】若正方形的边长为
,连接
,
,在点
运动的过程中,当
时,请在备用图中画出此时的图形,并求出此时
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](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/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862730f28c12750ebea0af5edcac5fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef9d0784478511736255074b9395fae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/5a5fa1b3-5fba-4355-8120-99cda6f5fdce.png?resizew=509)
(1)【方法体会】线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef9d0784478511736255074b9395fae.png)
解:在图甲中,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faee0268e5ede6318697e5a8509dd6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90c579436ff500a36fe7976012bc227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb11667abcb2759f301391b9850352be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
则:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a1e0c08b99addcc37e4176f5882e8f.png)
即:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9195d58eb86b8cfacc37f3782eec27a7.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaecf08a22124a457128fb04c9c02bb.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c20968b91619283dd0bf4810cd3086.png)
∴______(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d7d84e698f6d38fa2be14d36c04988.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343f75b2c5479c279abca2faed278901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81f683bfa5fb4f5d901503bfa7ccf26.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/06ea4ec9-979b-4a8e-b791-ecdd1567f6b0.png?resizew=236)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e655be1d2908b97ed4df568a10177013.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6d4df1654d5d59864a7d4fd3bd27dd.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86129aef281bd7f5da10963e5164d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79216c6a32bb699aeb36144da020490.png)
又∵点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87448e09eaa816e50ae92d111d5ded6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe5747aaac225fd08ad9789789b3804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14985aca12e83ce0d6400b65857c9a0.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343f75b2c5479c279abca2faed278901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79216c6a32bb699aeb36144da020490.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef9d0784478511736255074b9395fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bff235ce9338aeef7f2b952079cbb0f.png)
(2)【探索发现】如图乙,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef9d0784478511736255074b9395fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a36775168095280f72504478345bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f37d57768f163f56619e531b9541ab.png)
(3)【拓展运用】若正方形的边长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f30cb81835298cb612a828f355060a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd63ce2206748eb84eb2bebf459e754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e323c08b18488d11bd8f3cd74efa971a.png)
您最近一年使用:0次
2024-03-22更新
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106次组卷
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2卷引用:2024年贵州省部分学校2024年初中一模试题