如图,在平行四边形ABCD中,对角线AC与BD相交于点O,△ABO是等边三角形,BC=8.AE平分∠BAD交BC于点E,连接OE.请从A,B两题中任选一题作答
(1)线段AE的长等于_______ .
(2)线段OE的长等于________ .
(1)线段AE的长等于
(2)线段OE的长等于
![](https://img.xkw.com/dksih/QBM/2021/11/18/2853724375515136/2856168742764544/STEM/fec55678063f44d9928ed43e4844693e.png?resizew=142)
更新时间:2021-11-29 14:46:26
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解题方法
【推荐1】定义:对于线段
和点
,当
,且
时,称点
为线段
的“等距点”.特别地,当
,且
时,称点
为线段
的“强等距点”.在平面直角坐标系
中,点
的坐标为
.
(1)若点
是线段
的“强等距点”,且在第一象限,则点
的坐标为____________ ;
(2)若点
是线段
的“等距点”,则点
的纵坐标
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
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【推荐2】在△ABC中,若∠C=90°,∠B=30°,BC=5,则AB的长为_____ .(结果保留根号)
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【推荐1】如图,已知P和Q两点分别是∠CAB=30°的Rt△ABC斜边AB上一动点和直角边AC上的动点,AC=12,求PC+PQ的最小值是_____ .
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【推荐2】如图,四边形
为正方形,点E是
的中点,将正方形
沿
折叠,得到点B的对应点为点F,延长
交线段
于点P,若
,则正方形的边长为________ .
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【推荐1】如图,在矩形ABCD中,AB=2,BC=3,在边BC上取点P,使∠DAP的平分线过DC的中点Q,则线段BP的长等于 _____ .
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【推荐2】如图,以矩形
的顶点
为圆心,以任意长为半径作弧,分别交
及
的延长线于点
,
,再分别以点
,
为圆心,以大于
的长为半径作弧,两弧交于点
,作射线
交
的延长线于点
.若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218da81a9045623a13a16a283cf87554.png)
______ .
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