1 . 如图,已知
与圆
相切于点
,经过点
的割线
交圆
于点
、
,∠APC的平分线分别交
、
于点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/020aed35-4bf3-46e7-93d0-22a4e8ee31f1.png?resizew=247)
(1)证明:∠ADE=∠AED;
(2)若AC=AP,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/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://img.xkw.com/dksih/QBM/editorImg/2022/8/2/020aed35-4bf3-46e7-93d0-22a4e8ee31f1.png?resizew=247)
(1)证明:∠ADE=∠AED;
(2)若AC=AP,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce020c141e2db008dc7c8a27204a06b.png)
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2 . 选修4-1:几何证明选讲
如图,四边形
是⊙
的内接四边形,延长
和
相交于点
,
,
.
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/bab05a6b70914409b9ccc233459c2dce.png)
(Ⅰ)求
的值;
(Ⅱ)若
为⊙
的直径,且
,求
的长.
如图,四边形
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/796242376e8240199aefe3b7af00b0fc.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/34f255d17a534d258a71d8f3ff882796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/d6ed371acc6e4996b2f42a8c118b5be4.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/171fffbca4f94670ba7239c3c5b10863.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/ad27fa310b8c42c894396f127548e31e.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/33e0c83893404c4182d1fad333f55b4a.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2f608b8367084b3db743d06466930c68.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/bab05a6b70914409b9ccc233459c2dce.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2b5e290f300c44e1ac1b90735049377c.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/0e4d178913b0425dac9efb078d769209.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/34f255d17a534d258a71d8f3ff882796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/308884b466fa4954b7c6dfacea944e12.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2da0e5184594431d821ea9176dd4f1a5.png)
您最近一年使用:0次
2016-12-03更新
|
20次组卷
|
3卷引用:2016届广东省广州六中等六校高三第一次联考理科数学试卷
13-14高三上·宁夏银川·阶段练习
3 . 如图,已知
切⊙
于点E,割线PBA交⊙
于A、B两点,∠APE的平分线和AE、BE分别交于点C、D.求证:
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/a8ee2f252b6e49ac876894fc8562434d.png)
(Ⅰ)
;
(Ⅱ)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/a8ee2f252b6e49ac876894fc8562434d.png)
(Ⅰ)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/0ab87b06907e49b9ba7a83791dd99339.png)
(Ⅱ)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/402c81717bd247ffaa0225f0286085ac.png)
您最近一年使用:0次
2016-12-02更新
|
591次组卷
|
3卷引用:2016届广东省深圳市南山区高三上学期期末文科数学试卷
11-12高三上·广东·期末
4 . 如图,圆
的直径
为圆周上一点,
,过
作圆的切线
,过
作直线
的垂线
为垂足,
与圆
交于点
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9801e4d9f1e724f7e310657bdf046220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6cf11f0cc16be9c0301d0dc554cd7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2011/3/1/1570020512923648/1570020517781504/STEM/0d2cbcbe241649329280f711884e2917.png?resizew=139)
您最近一年使用:0次
2010高三·全国·专题练习
真题
5 . 如图,△ABC的角平分线AD的延长线交它的外接圆于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
(Ⅰ)证明:△ABE∽△ADC;
(Ⅱ)若△ABC的面积
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e28ce60503fab70ce1797449d90dadc.png)
(Ⅰ)证明:△ABE∽△ADC;
(Ⅱ)若△ABC的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4fccf16c3064c1fe33098ec3e8ae2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://img.xkw.com/dksih/QBM/2011/2/25/1570012428500992/1570012433973248/STEM/a38682262ddd43fea44e49fb2f7163c1.png?resizew=152)
您最近一年使用:0次
2016-11-30更新
|
403次组卷
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9卷引用:2017届广东珠海市高三9月摸底考试数学(理)试卷
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