如图,在
中
,斜边
的垂直平分线交
与
点,交
与
点,连接
.
是
的外接圆的切线,求
的大小?
(2)当
,
时,求
外接圆的半径.
![](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/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689f0ce5ab3467d8214794d8acb2bd6.png)
更新时间:2024-05-08 09:20:15
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】阅读理解:
材料1:平方差公式
,当
,
时,有
.在二次根式的一些运算或化简中,若能灵活运用公式,可使计算或化简变得简单.
如,
材料2:如图1,在
中,
,点
是
的中点,
于
交
于
,若
,
,求
的值.
解:设
,则
,解得
,
.
(1)化简:
;
(2)如图2,在
中,
,
,若
,求
的值;
(3)如图3,在等腰
中,
,
,
,则
.
材料1:平方差公式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c956a491d2d80aba6e5cae4b888e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90e8d5d7fed033f48270b1ff825fcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f11ec7f821458bd8b756084f12091c.png)
如,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4047167f034dcf1cade8a1f32406094.png)
材料2:如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba9fcc3b010fd1f911c957e0c292bf49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3d296e0d7154a170cb7d3ae42989b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c947b6e03abc58efe6ccc01185442663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4539f13547281837ab2af8739c9786.png)
解:设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef20d2e27f1691582ffbb2626a55e3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19d121a8c73f8befa3b3d99c1e6aca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6992a2f438415168f642b1e5f61d2ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8928839394f26e7cc38d5807374dd8d2.png)
(1)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94c7f92e59d3935408947e09ca940d3.png)
(2)如图2,在
![](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/54486ba185c2598d90d996821c7e8159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78dc4f4584665f0db3d9363784c1683.png)
(3)如图3,在等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42acd3ee01d9f843a8579ffb0b7d9d82.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
、
边的垂直平分线相交于点
,分别交
边于点
、
,连接
,
.
(1)若
的周长为6,求
的长;
(2)若
,
,求
的度数;
(3)若
,请用
表示
的度数(直接写出即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/e87ad265-c260-4452-82a4-cbfa25ae26a0.png?resizew=263)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19a24762d0c926dec6f464a31df6648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84261efd0ff6fafdc55cd446c1a5f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在矩形
中,点E,F分别在
,
边上,
,且
交于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/e8633d86-119f-4f9e-bb2b-8a17be4f5e08.png?resizew=130)
(1)若
,求四边形
的面积;
(2)连接
,若F为
的中点,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/74e46fb91464159b80eab7c28a926b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f49d1de7c6dfc04b6e84e23eec0a1d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/e8633d86-119f-4f9e-bb2b-8a17be4f5e08.png?resizew=130)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4083c581c6027c4b2ae7e3b3749f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c84911987fea2e5220626403c31c061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31929e2e01373ed9b1c244d9327d677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在矩形
中,
的平分线交
于点E.交
的延长线于点F.过点C作
于点G.连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/2281da93-37b4-49a7-b3e2-690e4d484361.png?resizew=158)
(1)求证:
;
(2)连接
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858bab4f7ca681a83a0f3e95feb740a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61075bcb70200f7c4babbaed258f7626.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/2281da93-37b4-49a7-b3e2-690e4d484361.png?resizew=158)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b0eb389bbe576cf8d7d346e2390f95.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbaff54b14910886cfaa1a89a37a233.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,已知以点O为圆心的半圆,
为直径,点C在半圆O上一点,连结
,点D为弧
的中点,连结
交
于点E,延长
交过点A的切线于点F,
.
![](https://img.xkw.com/dksih/QBM/2021/3/31/2689575512891392/2689638147514368/STEM/8a527515-1265-49a3-9e94-cda18ee212bc.png)
(1)求证:
.
(2)求
的长.
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056fa13229f832545dbe7d641c6ebf78.png)
![](https://img.xkw.com/dksih/QBM/2021/3/31/2689575512891392/2689638147514368/STEM/8a527515-1265-49a3-9e94-cda18ee212bc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0328aeed9a9230535503f7c1b3f9db.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
真题
【推荐2】如图,AB是⊙O的直径,CD与⊙O相切与点C,与AB的延长线交于点D,CE⊥AB于点E.
(1)求证:∠BCE=∠BCD;
(2)若AD=10,CE=2BE,求⊙O的半径.
(1)求证:∠BCE=∠BCD;
(2)若AD=10,CE=2BE,求⊙O的半径.
![](https://img.xkw.com/dksih/QBM/2019/7/8/2242447874252800/2242508267053056/STEM/4e2daffbddb14379b797d3df0152b3f3.png?resizew=207)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图1,O为半圆的圆心,C、D为半圆上的两点,且
.连接
并延长,与
的延长线相交于点E.
(1)求证:
;
(2)
与
,
分别交于点F,H.若
,如图2,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a313a8a3cc7d4bf0b56a76697a51ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/4288bff9-b88e-4760-b622-5e56c876aca7.png?resizew=328)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f21678a0009eb39b6886653d295b09a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d54a3e611afac9843ab7f474b721cabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f7d80f8ef121e39d557b5bbbc0f2ba.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,Rt△ABC中,∠ABC=90°,以AB为直径作⊙O,交AC于点E,点D为⊙O上一点,且CD=CB.连接DO并延长交CB的延长线于点F.
(1)求证:CD是⊙
的切线.
(2)若
,连接
.
①求图中阴影部分的面积;
②求DF的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/2bbe599b-eba3-4481-aaef-0483ba5e62c6.png?resizew=137)
(1)求证:CD是⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96adf2f6889345bbfa56491574904b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
①求图中阴影部分的面积;
②求DF的长.
您最近一年使用:0次