名校
1 . 我们把圆锥曲线的弦
与过弦的端点
,
处的两条切线所围成的三角形
(
为两切线的交点)叫做“阿基米德三角形”,抛物线有一类特殊的“阿基米德三角形”,当线段
经过抛物线的焦点
时,
具有以下性质:①
点必在抛物线的准线上;②
;③
.已知直线
:
与抛物线
:
交于
,
点,若
,记此时抛物线
的“阿基米德三角形”为
,则
点为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a7108d77b8ad681a6b7573ecac0406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed9d97b8745ed1c15349ea3fffc299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 阿基米德(公元前287年~公元前212年)是古希腊伟大的物理学家,数学家和天文学家,并享有“数学之神”的称号.他研究抛物线的求积法,得出了著名的阿基米德定理.在该定理中,抛物线的弦与过弦的端点的两切线所围成的三角形被称为“阿基米德三角形”.若抛物线上任意两点
处的切线交于点
,则
为“阿基米德三角形”,且当线段
经过抛物线的焦点
时,
具有以下特征:(1)
点必在抛物线的准线上;(2)
;(3)
.若经过抛物线
的焦点的一条弦为
,“阿基米德三角形”为
,且点
在直线
上,则直线
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a362b22d77130726c8dda391382eb186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-01-22更新
|
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4卷引用:重庆市七校2021-2022学年高二上学期期末数学试题
名校
解题方法
3 . 过抛物线
的焦点
作抛物线的弦与抛物线交于
、
两点,
为
的中点,分别过
、
两点作抛物线的切线
、
相交于点
.
又常被称作阿基米德三角形.下面关于
的描述:
①
点必在抛物线的准线上;
②
;
③设
、
,则
的面积
的最小值为
;
④
;
⑤
平行于
轴.
其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f92d681685fecaa72dcf38eda81852c.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60412d12cbcad399015a93fa8f4113d7.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
其中正确的个数是( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-11-05更新
|
2074次组卷
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4卷引用:云南师范大学附属中学2021届高三高考适应性月考卷(一)数学(理)试题
云南师范大学附属中学2021届高三高考适应性月考卷(一)数学(理)试题云南师大附中2021届高三高考适应性月考卷(一)理科数学试题(已下线)专题3 阿基米德三角形 微点2 阿基米德三角形综合训练(已下线)专题1 千年古图 巧用定理 练
名校
4 . 阿基米德(公元前287年~公元前212年)是古希腊伟大的物理学家、数学家和天文学家.他研究抛物线的求积法得出著名的阿基米德定理,并享有“数学之神”的称号.抛物线的弦与过弦的端点的两条切线所围成的三角形被称为阿基米德三角形.如图,
为阿基米德三角形.抛物线
上有两个不同的点
,以A,B为切点的抛物线的切线
相交于P.给出如下结论,其中正确的为( )
(1)若弦
过焦点,则
为直角三角形且
;
(2)点P的坐标是
;
(3)
的边
所在的直线方程为
;
(4)
的边
上的中线与y轴平行(或重合).
![](https://img.xkw.com/dksih/QBM/2020/7/22/2511303391174656/2511988147609600/STEM/7cfa128f28974ccd8b30b5f0572d80bd.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
(1)若弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c54c32a0c1846b04229f48a8f5f1913.png)
(2)点P的坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20137d97a725c3940db81942083918d5.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ead9440d1d148923e60c747b084b69.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2020/7/22/2511303391174656/2511988147609600/STEM/7cfa128f28974ccd8b30b5f0572d80bd.png?resizew=189)
A.(2)(3)(4) | B.(1)(2) | C.(1)(2)(3) | D.(1)(3)(4) |
您最近一年使用:0次
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3494次组卷
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6卷引用:云南师范大学附属中学2020届高三适应性月考(九)数学(文)试题
云南师范大学附属中学2020届高三适应性月考(九)数学(文)试题云南师范大学附属中学2020届高三适应性月考(九)数学(理)试题(已下线)专题3 阿基米德三角形 微点2 阿基米德三角形综合训练(已下线)专题9 圆锥曲线第二定义的应用 微点3 圆锥曲线第二定义的应用综合训练(已下线)专题12 圆锥曲线压轴小题常见题型全归纳(精讲精练)-1(已下线)专题1 千年古图 巧用定理 练
5 . 阿基米德(公元前287年---212年)是古希腊伟大的物理学家、数学家、天文学家,不仅在物理学方面贡献巨大,还享有“数学之神”的称号.抛物线上任意两点A、B处的切线交于点P,称△
为“阿基米德三角形”,当线段AB经过抛物线焦点F时,△
具有以下特征:(1)P点必在抛物线的准线上;(2)△
为直角三角形,且
;(3)
.若经过抛物线
焦点的一条弦为AB,阿基米德三角形为△
,且点P的纵坐标为4,则直线AB的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
A.x-2y-1=0 | B.2x+y-2=0 |
C.x+2y-1=0 | D.2x-y-2=0 |
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2020-07-22更新
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4卷引用:四川省遂宁市2019-2020学年高二下学期期末考试数学(理)试题
四川省遂宁市2019-2020学年高二下学期期末考试数学(理)试题四川省遂宁市2019-2020学年高二下学期期末考试数学(文)试题(已下线)专题21 抛物线的焦点弦 微点2 抛物线的焦点弦常用结论及其应用综合训练(已下线)专题12 解析几何3