如图,
内接于
,
是
的直径,
,垂足为D.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/405fac2f-f3ae-4c46-91e0-75c46de43c14.png?resizew=128)
(1)求证:
;
(2)已知
的半径为5,
,求
长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/405fac2f-f3ae-4c46-91e0-75c46de43c14.png?resizew=128)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845defe182d1ef5a31fa46fd3137af7a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
更新时间:2023-01-30 18:58:35
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,菱形ABCD的对角线AC、BD相交于点O,
,
,OE与AB交于点F.
(2)若
,
,求菱形ABCD的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acc0628dabbbaa929b7437021cad8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a78e006003b83147e901b34688a7f0b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf461f23743af212618a987311a87a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
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适中
(0.65)
【推荐2】如图,
,
,直线
经过点
.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2865011a4b43c4dcc518339f8e5e5.png)
,
于点
,将射线
绕点
按逆时针方向旋转
,与直线
交于点
.
(1)判断:
__________;
(2)若
,求
的长;
(3)若
的外心在三角形内部(不包括边上),直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bbe4cdd2c154bd9a8073b0d4cecb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2865011a4b43c4dcc518339f8e5e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a174192dab9db2175aa1f1717a26d4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62fc6421dad5407bca9c74ab81922022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/f8d406d4-d2ea-4e5f-8713-ba0dde888835.png?resizew=435)
(1)判断:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541ed2f46f2b074a6b22349feec39060.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知
是
的直径,点
在
上,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8c18c217-b7ce-4d1b-ba0b-ed9e06ae4582.png?resizew=321)
(1)如图1,连接
,
,
,求证:
;
(2)如图
,过点
作
交
于点
,直径
交
于点
,若
为
中点,
的半径为
,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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8c18c217-b7ce-4d1b-ba0b-ed9e06ae4582.png?resizew=321)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbab840d528f4ce7a9ef87e8446f84e.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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解答题-问答题
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适中
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【推荐2】如图,在
中,
、
是两条弦,
,
,垂足分别为
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/06ae0330-05da-404c-a241-4f009f89d28e.png?resizew=143)
如果
,那么
与
的大小有什么关系?为什么?
如果
,那么
与
的大小有什么关系?
与
的大小有什么关系?为什么?
与
呢?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feacc4489396c7c13f2509fb20d2950b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab780823d314aaca36b619c0c7298a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/06ae0330-05da-404c-a241-4f009f89d28e.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知A,B,C均在⊙O上,请用无刻度的直尺作图.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5d8c6ca-6bb0-4348-aa97-c676921d38c6.png?resizew=265)
(1)如图1,若点D是
的中点,试画出
的平分线;
(2)若
,点D在弦
上,在图2中画出一个含
角的直角三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c5d8c6ca-6bb0-4348-aa97-c676921d38c6.png?resizew=265)
(1)如图1,若点D是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713bb0199e6f0280f5556db313bbe694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f124aa6c15a72314d59122603b4af79.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,
内接于
是
的直径,
是
的切线,连接
并延长交
于点
,交
于点
,且
.
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24891657669e67b63ee57ed2d520389.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cab1ab74cba4b56e405128e2eeaa350.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d934bbca77a8113baae86b7a2e25be67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
您最近一年使用:0次