名校
解题方法
1 . 在平行四边形
中,
为
边上靠近点
的三等分点,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e070f7f9e7f166b447e0d3a188ce0881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adebff9fb726cd58eda1ef994890901.png)
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解题方法
2 . 直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4d8e12bbe0e28a02471682756972b5.png)
,与圆
相交于
、
两点,点
为直线
上一动点,则
的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4d8e12bbe0e28a02471682756972b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1a5f2533b8ea54b7022383f875666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a6924d9daf8c9734ccb1104d96ca44.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b4dd1dae21b5a04e2146987f0f61a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
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名校
解题方法
3 . 在平行四边形ABCD中,若
,
,则平行四边形ABCD的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42083f00cd68320e4e0275400c139551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499fd1c359cd78bf067326e4b940acee.png)
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名校
4 . 定义在封闭的平面区域D内任意两点的距离的最大值称为平面区域D的“直径”.如图,已知锐角三角形的三个顶点A,B,C在半径为1的圆上,角的对边分别为a,b,c,
.分别以
各边为直径向外作三个半圆,这三个半圆和
构成平面区域D,则平面区域D的“直径”的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
5 . 如图,点
是以
为直径的半圆
上异于
、
的动点,点
与点
在直线
的两侧,且
,
,若
,则
的最大值为________ .
![](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/1dde8112e8eb968fd042418dd632759e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d271c60f02292c5164a5dbd2b2777e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778dc9a27129af4dd0f7c39fe2aca9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9338b40019b8b73a2ebd332d41861e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7906b66906ec5943b3bbd9ce9a47e7.png)
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解题方法
6 . 已知
在平面直角坐标系中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b3dff6522c24a955ea87891d2a7b25.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe11f37cf3432937cde3e841a552d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b3dff6522c24a955ea87891d2a7b25.png)
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解题方法
7 . 已知
,
,
均为平面单位向量,且两两夹角为120°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d69ec00311ecffeff107753e064ad8.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d69ec00311ecffeff107753e064ad8.png)
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8 . 已知点
为
外接圆的圆心,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c507d5157851d4a24bfbdecaeb3c071b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c47d2fe38ec0c1b4f7f82035a2fa40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c507d5157851d4a24bfbdecaeb3c071b.png)
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2024高三·全国·专题练习
解题方法
9 . 四边形
中,M是
上的点,
,
,若N是线段
上的动点,
的取值范围是_______ .
![](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/dff9554b78070407bfc62f15b78a4fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c5cc60056f89af454378cd8bd11c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340f84b11637ee42eaeeec250d0f0c29.png)
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解题方法
10 . 太极图被称为“中华第一图”,其形状如阴阳两鱼互抱在一起,因而被称为“阴阳鱼太极图”.如图所示的图形是由半径为2的大圆O和两个对称的半圆弧组成的,线段MN过点O且两端点M,N分别在两个半圆上,点P是大圆上一动点,令
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f628174dab470cf9a59f75f37d01e6.png)
________ ;
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875da985bd6412c94b5cf94dd018434f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb1f3f67cb7b80fb1eae54c890921db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0656550e7baa73cadb06b93c0ea5930f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f628174dab470cf9a59f75f37d01e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e16eb319ee454088f5b527cf6c4d5.png)
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