如图1,
是
内接三角形,
.点
是弧
上一点(
不与
重合),连结
,过点
作
平行线交
延长线于点
,请完成以下几个问题:
(1)求证:
;
(2)若
,
①求
的半径;
②当
是等腰三角形时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a651eb577dbada1f29590e558d6f9fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f90eb172dbd2ff7ae6f705801c0737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2be77faf0f447c7ac51ef7f375c482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/0ad60d59-cde5-4e6c-866b-88d1fff2be6c.png?resizew=542)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4302919d90dc02f4d80c871e22cd56f3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b632203eddcbfda48320b9b44c5f5e3.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
2023·浙江舟山·模拟预测 查看更多[2]
更新时间:2023-06-28 18:20:13
|
相似题推荐
解答题-作图题
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(0.85)
【推荐1】如图,在△ABC中,∠ABC=∠C,D是BA延长线上一点,E是AC的中点.
(1)用直尺和圆规按要求作图,并在图中标出相应字母(保留作图痕迹,不写作法):在射线BD右侧,过点A作射线
,在射线AM上截取AF=BC连接BE,EF;
(2)在(1)条件下,求证:F,E,B三点共线.
(1)用直尺和圆规按要求作图,并在图中标出相应字母(保留作图痕迹,不写作法):在射线BD右侧,过点A作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465ba81b8bcd5acfcecf68f41fc13b10.png)
(2)在(1)条件下,求证:F,E,B三点共线.
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863603928924160/2864374151389184/STEM/91c6b100-e53d-44c1-8302-129193930d12.png?resizew=133)
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解答题-证明题
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【推荐2】如图所示,
中,
的平分线与
的垂直平分线相交于点
,
,
,垂足分别为
、
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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解答题-问答题
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较易
(0.85)
【推荐1】如图,在四边形ABCD中,AB=BC=2,CD=3,DA=1,且AB⊥BC于B.
求:(1)∠BAD的度数;
(2)四边形ABCD的面积.
求:(1)∠BAD的度数;
(2)四边形ABCD的面积.
![](https://img.xkw.com/dksih/QBM/2021/5/10/2717814712557568/2791696496214016/STEM/932606b0-271d-4d1a-a7b6-81576ce7d159.png)
您最近一年使用:0次
解答题-证明题
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【推荐2】如图,
中
,
是
边上的高,
平分
,交
于点
,过点
作
,垂足为
,
.
(1)求证:
垂直平分
;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/f2c7f0d0987ee427b7efbbf889b9bf16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/36da1970-dae3-442a-afc0-9d6df1cd2896.jpg?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
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(0.85)
【推荐1】如图,在平行四边形
中,过点
作
,垂足为
,连接
,
为线段
上一点,且
.
(1)求证:
;
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/2b3e1480-a423-451e-9596-97020204ed03.png?resizew=183)
(1)求证:
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fc232acd89fc499de346969ce8ced1.png)
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您最近一年使用:0次
解答题-问答题
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【推荐1】如图1,AB为圆O直径,点D为AB下方圆上一点,点C为弧ABD中点,连结CD,CA.
![](https://img.xkw.com/dksih/QBM/2021/12/24/2879485606125568/2881649238990848/STEM/e66e7df9-629e-488e-b228-bf40306ec549.png?resizew=381)
(1)若
,求
的度数;
(2)如图2,过点C作
于点H,交AD于点E,
,求
(用含
的代数式表示);
(3)在(2)的条件下,若
,
,求线段DE的长.
![](https://img.xkw.com/dksih/QBM/2021/12/24/2879485606125568/2881649238990848/STEM/e66e7df9-629e-488e-b228-bf40306ec549.png?resizew=381)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101040eda20818a3436655f692ccefa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
(2)如图2,过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1b2a249841cb942fea24811feda9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a2db6311e228ed33b6c71d0a5918cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87cd1e7c40b96267173ec181f8cf2f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf05aaa351239448a9ab0e048f76faf.png)
您最近一年使用:0次
解答题-证明题
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(0.85)
【推荐2】如图,点C在以
为直径的
上,
平分
交
于点D,过D作
的垂线交
的延长线于点F,垂足为E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/44703010-b75f-4287-97aa-398e476fbab1.png?resizew=264)
(1)求证:
与
相切;
(2)若
,
,求
的半径.
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.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/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/44703010-b75f-4287-97aa-398e476fbab1.png?resizew=264)
(1)求证:
![](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/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21d8e7af78693e5da7957c8034e8bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次