如图,是
的直径,
为
上的两点,连接
与
交于点
,过点
作
的切线
交
的延长线于点
.
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27c21e4ff0b387dc891e489b47c95d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
更新时间:2024-03-31 00:00:29
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,四边形
是正方形.点
是
边上的任意一点,
于点
,
,且交
于点
,连接
.
(1)请直接写出线段
的关系;
(2)若点
是
延长线上的任意一点,其他条件不变,如图2,(1)中的结论是否依然成立吗?请做出判断并给予证明;
(3)若点
是
延长线上的一点,且
,
,其他条件不变,如图3求
的长(直接写出结果).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd99874843902d155f3f9dc26b924f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7045cee264e93b07cdf00012bd881a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37b904ebcd48d82c590f1c81eca48d9.png)
(1)请直接写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37b904ebcd48d82c590f1c81eca48d9.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea87273e30e8a5809e78ca57ff0c08b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b968e5afd2c5c5526e7bad0dd01215c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/2020/9/28/2559284795703296/2563255407771648/STEM/a3f5b306c220477fbb11dd2c8f65f014.png?resizew=540)
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解答题-问答题
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适中
(0.65)
【推荐2】(1)如图1,
是
的平分线,请利用该图形画一组以
所在直线为对称轴且一条边在OP上的全等三角形,并用符号表示出来;
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0208091c37794834b43c49eed863ab10.png)
(2)请你参考这个作全等三角形的方法,解答下列问题:
①如图2:在
中,
°,
°,
平分
,试判断
和
、
之间的数量关系;
②如图3,在四边形
中,
平分
,
,
,
,求
的长.
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/34351a8e290d4c6bb52d847ff2515ba3.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/da55ed325d9945919c0c2facd6a45213.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/34351a8e290d4c6bb52d847ff2515ba3.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0208091c37794834b43c49eed863ab10.png)
(2)请你参考这个作全等三角形的方法,解答下列问题:
①如图2:在
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/e9acb8e1edb04ea1bdda60b147be2007.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/25a2b4879adb418c864b21a41171ff1a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0ad39105a1d9488a8637572bead3a1f6.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/f1154118840a4a2580c266b6541ed030.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/537d0eb5c9eb4c9488fd2b39fdca854a.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/45651ed2f507405dbd7a080274211f2b.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0563b9da9f8e43de8a08602289770a13.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/86b267a3d91241539078b04d343e2f88.png)
②如图3,在四边形
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/14579a9877284d45852f4d7dc9e35572.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0563b9da9f8e43de8a08602289770a13.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/53c2721734b74c4ca723837235b6aeae.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/16aa2ecde23f450da0d029f976ce69d7.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/0a3bcf7776d3406c883592b2d3729727.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/f1e5293e23484292a90be38a8c402cad.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1573949275504640/1573949281927168/STEM/68fee87101a344b5b0ba056d9e15e4ed.png)
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解答题-作图题
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名校
【推荐3】我国古代数学著作《九章算术》中有这样一个问题:今有池方一丈,葭生其中央,出水一尺.引葭赴岸,适与岸齐.问水深、葭长各几何.(1丈=10尺)
大意是:有一个水池,水面是一个边长为10尺的正方形,在水池正中央有一根芦苇,它高出水面1尺.如果把这根芦苇拉向水池一边的中点,它的顶端恰好到达池边的水面.水的深度与这根芦苇的长度分别是多少?
将这个实际问题转化为数学问题,根据题意画出图形(如图所示),其中水面宽AB=10尺,线段CD,CB表示芦苇,CD⊥AB于点E.
(1)图中DE= 尺,EB= 尺;
(2)求水的深度与这根芦苇的长度.
大意是:有一个水池,水面是一个边长为10尺的正方形,在水池正中央有一根芦苇,它高出水面1尺.如果把这根芦苇拉向水池一边的中点,它的顶端恰好到达池边的水面.水的深度与这根芦苇的长度分别是多少?
将这个实际问题转化为数学问题,根据题意画出图形(如图所示),其中水面宽AB=10尺,线段CD,CB表示芦苇,CD⊥AB于点E.
(1)图中DE= 尺,EB= 尺;
(2)求水的深度与这根芦苇的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/24/3116d242-1d96-4163-8187-899b030cee31.png?resizew=105)
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解答题-作图题
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适中
(0.65)
【推荐1】在
中,
,
,
.
的外接圆,并在外接圆上找一点D,使
;
(2)在上面得出的图形中,连接
,求出
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b997b0da1c9338e640206bfc0d0a427a.png)
(2)在上面得出的图形中,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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解答题-证明题
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适中
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【推荐2】如图,AB为⊙O的直径,C在⊙O上,并且OC⊥AB,P为⊙O上的一点,位于B、C之间,直线CP与AB相交于点Q,过点Q作直线与AB垂直,交直线AP于R.求证:BQ=QR.
![](https://img.xkw.com/dksih/QBM/2018/12/9/2093338027294720/2097477467684864/STEM/3a62eef52abb4b1c8f3f41e7c63083a3.png?resizew=205)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,
的直径
和
是它的两条切,
与
相切于点E,并与
分别相交于
两点.设
,求y关于x的函数解析式,并画出它的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a753513508b5121e0c5ed07e6e94fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e4d7503a7d57ba242ad4e05c7006a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d240ea67c239b0d9213448c11cba18c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e2eb752b2489a3b15683a01c8de92c.png)
![](https://img.xkw.com/dksih/QBM/2021/10/2/2820874611793920/2821589264449536/STEM/440aa5ee-9a43-46c5-a063-2bb44f130f94.png)
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解答题-证明题
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适中
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【推荐2】如图,
是
的外接圆,
是
的直径,点
在
上,连接
,且
平分
,过点
作
的切线交
的延长线于点
.
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/963934b6-46f1-42c0-9ef7-c53f266c71db.png?resizew=169)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0ecbe8f614363c5d7b738a8df2fd9a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a40b3c8ffa023b034b5f2486f25c2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edbbab119e1b312eb4b09d383a4410a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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解答题-问答题
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(0.65)
【推荐1】如图:已知△ABC中,AB=5,BC=3,AC=4,PQ∥AB,P点在AC上(与A、C不重合),Q在BC上.
(1)当△PQC的面积是四边形PABQ的面积
时,求CP的长.
(2)当△PQC的周长与四边形PABQ的周长相等时,求CP的长.
(1)当△PQC的面积是四边形PABQ的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(2)当△PQC的周长与四边形PABQ的周长相等时,求CP的长.
![](https://img.xkw.com/dksih/QBM/2014/10/13/1573752628215808/1573752633974784/STEM/383ba6f2f1fd43d9b230ce31e02b10a9.png)
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解答题-问答题
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【推荐2】如图,在△ABC中,∠ACB=90°,AB=5,AC=4,过点C作直线MC使得∠BCM=∠BAC,求点B到直线MC的距离.
![](https://img.xkw.com/dksih/QBM/2016/6/14/1574211231358976/1574211236896768/STEM/2f1f0a280ac346bba985a7a7ead43a5d.png)
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