请用直尺(不带刻度)和圆规按要求作出符合下列要求的点(不写作法,保留作图痕迹).
(1)在图1中作一点
,使
.
(2)在图2中作一点
,使
.
(3)如图3,在
中,若
,
,求
面积的最大值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/d73fe0f5-b820-4d5c-8447-29c3d87af2e1.png?resizew=359)
(1)在图1中作一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7a1d7dead053c838decaf271354b6f.png)
(2)在图2中作一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a36bd2f9ae720f0d82ed41821f41db8.png)
(3)如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2023-10-31 15:27:41
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知
,点D是BC上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/9f027101-63df-444a-8e9d-cd289bab95d8.png?resizew=355)
(1)如图1,若
,
,求证:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83339bbde0baab5e782b449409f12fb.png)
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810242c9205006b28c6bc6612c2b1cd0.png)
(2)如图2,请直接写出
与
之间满足什么数量关系时,总有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b8ee3c2174306999d94daf1fcea4a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/9f027101-63df-444a-8e9d-cd289bab95d8.png?resizew=355)
图1 图2
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204c41e3de6ebc482eb2a6062d83ac4d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83339bbde0baab5e782b449409f12fb.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810242c9205006b28c6bc6612c2b1cd0.png)
(2)如图2,请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685516a27697104e83b311d76efa17aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810242c9205006b28c6bc6612c2b1cd0.png)
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真题
名校
【推荐2】如图,C是圆O被直径AB分成的半圆上一点,过点C的圆O的切线交AB的延长线于点P,连接CA,CO,CB.
(1)求证:∠ACO=∠BCP;
(2)若∠ABC=2∠BCP,求∠P的度数;
(3)在(2)的条件下,若AB=4,求图中阴影部分的面积(结果保留π和根号).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/18/122cfceb-bd12-440b-bfd4-360bd0cac5ad.png?resizew=200)
(1)求证:∠ACO=∠BCP;
(2)若∠ABC=2∠BCP,求∠P的度数;
(3)在(2)的条件下,若AB=4,求图中阴影部分的面积(结果保留π和根号).
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在
中,
,
,
的垂直平分线分别交
,
于点
,
,且
.求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2020/5/13/2462066523635712/2462465540079616/STEM/d0a61988e19c416c8b682daf94e6fa72.png?resizew=156)
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【推荐2】如图,在
中,
垂直平分线段
,
平分
,
于点
,
交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/5af31714-d34d-4163-b022-4ba87d094fd0.png?resizew=198)
(1)求证:
.
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827beb23a9fe02a8b588645bcb82ce67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/5af31714-d34d-4163-b022-4ba87d094fd0.png?resizew=198)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb65161f9508867ed7847606781fa7e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】(1)如图,在锐角
的外部找一点
,使
的面积与
的面积相等且点
在以
为直径的圆上,请用尺规作图的方法确定点
的位置(不写作法,保留作图痕迹);
)中,若以
为直径的圆上与
相交于点
,若
,
且
,求弧
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/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f8939f8c274cb26a8a6a5fa2469087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-问答题
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【推荐2】阅读下面材料:
在数学课上,老师提出如下问题:
已知:如图,四边形
是平行四边形
求作:菱形
,使点
,
分别在
,
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/db32a167-c587-46ca-8aee-a242be3ae504.png?resizew=374)
小军的作法如下:
I:连接
;
II:作
的垂直平分线
分别交
,
于
,
;
III:连接
,
.四边形
即是菱形
(1)你认为小军的作法正确吗?说明理由.
(2)在①
,②
,③
,④
,⑤
,中选出你认为菱形
可以变成正方形的所有条件.答案为___________.
在数学课上,老师提出如下问题:
已知:如图,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
求作:菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/db32a167-c587-46ca-8aee-a242be3ae504.png?resizew=374)
小军的作法如下:
I:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
II:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
III:连接
![](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/910936ec9fb419d51ce2f5ea817f8401.png)
(1)你认为小军的作法正确吗?说明理由.
(2)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695525d00319665b1ad0d01717979523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dae0ff37aafacd1e578c0d060bdd83e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c61dd6429e88b978ecdb2fa2ce3a034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02816311aebc9c6c4e110d595ce1b037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
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解答题-问答题
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【推荐1】已知
,
,
是
上的三个动点,四边形
是平行四边形,直径
,交
于点
,
为垂足,连接
.
(1)如图①,求
的大小;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/a91e8d55-c43d-40f8-876b-307c728ddac6.png?resizew=131)
(2)如图②,经过点
作
的切线,与
的延长线交于点
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(1)如图①,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2e6494cf8d2dff0746a9bb72cef43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/a91e8d55-c43d-40f8-876b-307c728ddac6.png?resizew=131)
(2)如图②,经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/13b7b2d3-52cc-421e-b31b-3adf7a747ce3.png?resizew=147)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,已知为
的直径,
是弦,且
于点
.连接
、
、
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e39d47894ea08ddc26ef9b0610f218c3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8cc58ef27567f0ab06eb1012aec330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次