如图,在每个小正方形的边长为1的网格中,
,
,
为格点,
为小正方形边的中点.
的长等于_________ ;
(2)点
,
分别为线段
,
上的动点,当
取得最小值时,请在如图所示的网格中,用无刻度 的直尺,画出线段
,
,并简要说明点
和点
的位置是如何找到的(不要求证明).
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d21b85d945e8e236f7a687584c5e733f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
更新时间:2020-06-23 14:12:15
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【推荐1】如图,在矩形ABCD中,AB=4,AD=3,E为边CD的中点,点P在线段AB上运动,F是CP的中点,则△CEF的周长的最小值是_____ .
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【推荐2】如图,E是边长为6的正方形
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解题方法
【推荐1】如图,在
中,
为
边的中线,E为
上一点,连接
并延长交
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,
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【推荐2】如图,在
中,
,
为
边
上一点,
,
平分
的外角,且
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交
于
为边
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,连接
交
于
.以下结论:①
;②
;③
;④若
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【推荐1】如图,在正方形网格中,每个小正方形的边长为1,
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【推荐2】如图,在每个小正方形的边长为1的网格中,取格点A、B、C并连接AB,BC.取格点D、E并连接,交AB于点F.
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(Ⅱ)若点G在线段BC上,且满足AF+CG=FG,请在如图所示的网格中,用无刻度的直尺,确定点G的位置,并简要说明点G的位置是如何找到的__________________________________________________________________________________________________________ .
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【推荐2】新定义:已知三条平行直线,相邻两条平行线间的距离相等,我们把三个顶点分别在这样的三条平行线上的三角形称为格线三角形.如图,已知等腰
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