如图所示的网格图中,每小格都是边长为1的正方形,△ABC的三个顶点都在格点上,在建立直角坐标系后,点C的坐标(-1,2).
![](https://img.xkw.com/dksih/QBM/2015/3/10/1573810138447872/1573810144747520/STEM/71f036a867b942fe807b8f9f9207d34b.png)
(1)画出△ABC绕点D(0,5)逆时针旋转90°后的△A1B1C1;并标出△A1B1C1相应各点的坐标.
(2)求点A旋转到A1所经过的路线长.(结果保留π)
![](https://img.xkw.com/dksih/QBM/2015/3/10/1573810138447872/1573810144747520/STEM/71f036a867b942fe807b8f9f9207d34b.png)
(1)画出△ABC绕点D(0,5)逆时针旋转90°后的△A1B1C1;并标出△A1B1C1相应各点的坐标.
(2)求点A旋转到A1所经过的路线长.(结果保留π)
更新时间:2016-12-05 23:07:50
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解答题-作图题
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【推荐1】如图,在10×10正方形网格中,每个小正方形的边长均为1个单位.将△ABC向下平移4个单位,得到△A′B′C′,再把△A′B′C′绕点C'顺时针旋转90°,得到△A″B″C′,请你画出△A′B′C′和△A″B″C′,求出
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解答题-作图题
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【推荐2】如图,在边长为1个单位长度的小正方形组成的网格中,
的顶点和点
均在格点(网格线的交点)上.
(1)将
向右平移4个单位长度,再向上平移2个单位长度,画出平移后的
;
(2)将
以
点为中心逆时针旋转
得到
,画出
;
(3)在(2)的条件下,若
的中点为
,试求
点所经过的路径长.
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(2)将
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解答题-作图题
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【推荐1】如图,
的三个顶点坐标分别为
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,
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(3)借助网格,利用无刻度直尺画出
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【推荐2】在如图所示的正方形网格中,△ABC的顶点均在格点上,请在所给的平面直角坐标系中按要求作图并完成填空:
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解答题-作图题
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适中
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【推荐1】在平面直角坐标系
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(1)画出旋转后的
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解答题-作图题
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【推荐2】如图,在平面直角坐标系中,已知
的三个顶点坐标分别是
,
,
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(1)画出
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(1)画出
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