问题背景:
如图1,在四边形
中,点
为
上一点,
,求证:
.(无需证明)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/6956a702-e35f-43bf-a6d7-23f94fc65aa0.png?resizew=380)
(1)探究:
如图2,在四边形
中,点
为
上一点,当
时,上述结论是否依然成立?说明理由.
(2)应用:
请利用(1)获得的经验解决问题:
如图3,在
中,
,
,点
以每秒1个单位长度的速度,由点
出发,沿边
向点
运动,且满足
,设点
的运动时间为
(秒),当以
为圆心,以
为半径的圆与
相切时,求
的值.
(3)拓展:
在(2)的条件下,当
时,直接写出点
在边
上所走的总路程
__________.
如图1,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7502d2b89b731a7c11faa97815d46d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c4bc1c164e8dd6747cf998b237ef90.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/6956a702-e35f-43bf-a6d7-23f94fc65aa0.png?resizew=380)
(1)探究:
如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d05dbb9b4efeeffb7a5ae7be507429.png)
(2)应用:
请利用(1)获得的经验解决问题:
如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a257065b0ac37614b647e865bf989be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e626d0c926bb97509381d12fd81d79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)拓展:
在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa9b9894a953c812b52eba95559f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
22-23九年级上·江苏宿迁·期末 查看更多[5]
江苏省宿迁市沭阳县沭阳如东实验学校2022-2023学年九年级上学期期末数学试题河北省邯郸市育华中学2022-2023学年九年级下学期月考数学试题(已下线)专题04相似三角形的性质与判定(八大类型)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(苏科版)(已下线)专题14解答压轴题2(精选80道) -【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(苏科版)2023年宁夏石嘴山市平罗县中考数学二模模拟试题
更新时间:2023-02-20 19:16:06
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解答题-证明题
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【推荐1】在平面直角坐标系中,已知矩形ABCD,AB∥DC∥y轴,B(-1,-2),D(2,4).抛物线C:y=a(x-m)2+n(a>0)的顶点Q在边BC上,与边AB,DC分别相交于点E,F,点H为CD的中点.
![](https://img.xkw.com/dksih/QBM/2020/6/24/2491426190082048/2493776985194496/STEM/7d5a83a2c83b4c0e9f2eec700c10aea7.png?resizew=161)
(1)若a=1
①当抛物线C过点H时,求m的值;
②当点F在点H下方,AE=HF时,求m的值;
(2)当m=-1时,求a的取值范围;
(3)若点M
在抛物线C上,求证:点M始终位于
轴下方.
![](https://img.xkw.com/dksih/QBM/2020/6/24/2491426190082048/2493776985194496/STEM/7d5a83a2c83b4c0e9f2eec700c10aea7.png?resizew=161)
(1)若a=1
①当抛物线C过点H时,求m的值;
②当点F在点H下方,AE=HF时,求m的值;
(2)当m=-1时,求a的取值范围;
(3)若点M
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80872fb6ffa62a2055f52f4819296069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】如图1,平面直角坐标系中,直线
与抛物线
相交于A,B两点,其中点A在x轴上,点B在y轴上.
(1)求抛物线的解析式;
(2)在抛物线上存在一点M,使
是以
为直角边的直角三角形,求点M的坐标;
(3)如图2,点E为线段
上一点,
,以
为腰作等腰
,使它与
在直线
的同侧,
,
沿着
方向以每秒一个单位的速度运动,当点B与A重合时停止运动,设运动时间为t秒,
与
重叠部分的面积为S,直接写出S关于t的函数关系式,并写出自变量t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b098e17fa76c648424e9cadf558cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df04abfcf792463c45866b9f32472c10.png)
(1)求抛物线的解析式;
(2)在抛物线上存在一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)如图2,点E为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab34c8e368a7a2346a3922f5c532823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2556d8a3c762f55138aa3afceedd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/385e1273-f02c-408b-bd72-134145ae1bd1.png?resizew=281)
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名校
【推荐1】已知
是
的直径,
是
的切线,连接
并延长,交
于点D,连接
,
.
(1)如图1,求证:
;
(2)如图2,连接
,交
于点E,且
,求证:
;
(3)如图3,在(2)的条件下,
,点G是弧
的中点,连接
,求
的长.
![](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/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba42cb162fb87e29e385cb383e3bf4e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/c80ec569-3f3c-4e51-99b4-d25d4c926be6.png?resizew=645)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c98a9dda854069d521a83b75dab198.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a93e0b6156befa00b50bdfaef95d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa03fe455c3c777f1a200cb6967e469.png)
(3)如图3,在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c2ac275e3a4cb97d2e37d028d24202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d98c7cc929a327ced88a7bb671c44c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
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【推荐2】在平面直角坐标系
中,
的半径为1.对于
的弦
和
外一点C给出如下定义:
若直线
,
中一条经过点O,另一条是
的切线,则称点C是弦
的“关联点”.
(1)如图,点
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79bc392c5587559b4e6fdd6c56a3197.png)
①在点
,
,
中,弦
的“关联点”是______.
②若点C是弦
的“关联点”,直接写出
的长;
(2)已知点
,
.对于线段
上一点S,存在
的弦
,使得点S是弦
的“关联点”,记
的长为t,当点S在线段
上运动时,直接写出t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/00aeb513-62df-49bc-97b6-71190f5e3c75.png?resizew=254)
(1)如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2658e6e3eac87ea26a5e156c7fa449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79bc392c5587559b4e6fdd6c56a3197.png)
①在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4363d6bff001cf79ab6c65723d181e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66a0a71da5a92af3094021df0df9eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a651325ece5e100b4f90565ca14c979c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
②若点C是弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b93e3f4eb68d7e137c034d9d32094be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149ee9d2da588990c54ec5199ad221ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c76e9a82264c71d58a3e53647e0f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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解答题-作图题
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【推荐3】在平面直角坐标系
中,对于点
和
,若以
为圆心,
为半径画弧,且该弧顺次经过
上两点
、
,满足
,则称这条点
、
之间过点
的弧为
关于点
的满意弧,
为
关于点
的满意角.例如,图
中经过点
、
、
的弧是
关于点
的满意弧,
是
关于点
的满意角.
(1)如图2,已知点
的坐标为
,
的半径为
,
①在图2中画出
关于点
的满意弧,并直接写出该弧的弧长;
②点
是直线
上的动点,在图3中画出
关于点
的满意角最大时的满意弧,并求此时满意弧的满意角;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/de96a8ad-8c8c-460d-9f02-14c4365fcf1a.png?resizew=297)
(2)
的圆心在
轴上,半径为
,点
在
轴上,若对于
,至少存在一个点
能画出
关于它的满意弧,直接写出圆心
的纵坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0101a7b5c8a4aed0de2af363792e39a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4711eb1596d35616bf67eb5710787292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb36b468609ddd66b9385155c640dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb36b468609ddd66b9385155c640dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/98d22b2c-8da7-4a37-8551-072bf961ff26.png?resizew=158)
(1)如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
①在图2中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fccc3468aeb5faa3715c44b87c9afa.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1d8d5cea065075fe50706abe3ae802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/de96a8ad-8c8c-460d-9f02-14c4365fcf1a.png?resizew=297)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/67bc0fed-0be1-4fd0-a136-1cd5c18f18e8.png?resizew=297)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】综合与实践
问题情景:
如图
,矩形
中,
,
,点
、点
分别是
和
的中点,连接
,将
绕点
顺时针旋转
(
),连接
,
,延长
交
于点
.
(1)如图
,当四边形
是矩形时,求旋转角
的正切值;
(2)当
旋转到图
的情况时,探究
,
,
的数量关系;
拓展应用:
(3)在(
)的条件下,
旋转的过程中,若
,请直接写出
的长度.
问题情景:
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/07140f277a35733d8c97577ccdd4e3ab.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708d48b595c17d4dccf9b4086d7e664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2746836e6b83bc9462db060d6b72d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
拓展应用:
(3)在(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a673ecfe58973cc19acec05c50a648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐2】如图1,
均为直角三角形,
与
相交于点
,以
为直径的
恰好经过点
,并分别于
交于点
和点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/253194a4-74bc-409d-8ac4-93568ab7871c.png?resizew=193)
(1)求证:
;
(2)如图2,过
作
,交
于点
,连接
,若
,则
的值是多少?
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/325e138e-7d02-4499-a69c-82ec8beeb0f8.png?resizew=201)
(3)如图3,在此图情况下,若
,试用含
的代数式表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/197cde71ac9d3bc8cb412d1af64b0f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1276abe8eca1b04261b8a2c21e05135f.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69950855a82b1c8c8f0aaf90e89ee412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/253194a4-74bc-409d-8ac4-93568ab7871c.png?resizew=193)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267f2c8dae80b9a9bb46b9f39bce21cc.png)
(2)如图2,过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f10896c75c577deef8d1886716495ca.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fc2a95321ae8af5141bfc7a2d82568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0925e1e98e16dbf57515c5c56b86e96d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/325e138e-7d02-4499-a69c-82ec8beeb0f8.png?resizew=201)
(3)如图3,在此图情况下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0319a1319867c5258fe169e9eb5e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/4/e3ee8b03-320a-4a2e-965d-ff5323460059.png?resizew=200)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐3】问题提出
(1)如图①,△
和
均为等腰直角三角形,且
,连接
、
,则
的值为______;
问题探究
(2)如图②,四边形
是边长为
的正方形,点
是
上一动点,以
为斜边在
边的右侧作等腰
,
,连接
、
.当
最小时求
的面积;
问题解决
(3)随着社会的发展,农业观光园走进我们的生活.某农业观光园的平面示意图如图③所示的四边形
,其中
,
,
,
.为了能够让广大游客更近距离观光,徜徉在大自然的海洋,设计师计划在
之间修一条观光小路,为了方便市民观赏,想让
最大.根据设计要求,求出当
的最大时
的面积.
(1)如图①,△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3bcb1d5b5cf32aa1d85c8a0ff5be30.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/274ae3f70122c99addb6df12405bac91.png)
问题探究
(2)如图②,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/1f767e7ff79a0fbfcf97244fd95bb9f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114a5ad325caa9a344eb5dd198413859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217d37ca5469a57cb7417a2ac0d58efe.png)
问题解决
(3)随着社会的发展,农业观光园走进我们的生活.某农业观光园的平面示意图如图③所示的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6696972e89d5617c99c914bc00f1c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695525d00319665b1ad0d01717979523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/a6fa5a64-8122-416c-a87a-b9be1230925a.png?resizew=431)
您最近一年使用:0次