如果一条直线将一个平面图形分成面积相等的两个部分,那么我们就把这条直线叫做该平面图形的“面线”,并且把“面线”被这个平面图形所截得的线段的长度叫做该图形的“面径”.记边长为2的等边三角形的“面径”长度为
,则
的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
更新时间:2024-02-12 14:17:03
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【推荐1】如图,已知
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【推荐1】如图,△ABC中,CA=CB,∠ACB=90°,E为BC边上一动点(不与点B、点C重合),连接AE并延长,在AE延长线上取点D,使CD=CA,连接CD,过点C作CF⊥AD交AD于点F,交DB的延长线于点G,若CD=3,BG=1,则DB=_______ .
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【推荐1】如图,已知在Rt△OAC中,O为坐标原点,直角顶点C在x轴的正半轴上,反比例函数
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