先阅读下列一段文字,再解答问题.
已知在平面内有两点P1(
),P2(
),其两点间的距离公式为P1P2=
,同时,当两点所在的直线在坐标轴上或平行于坐标轴或垂直于坐标轴时,两点间距离公式可简化为
或
.
(1)已知点P(2,4),Q(-3,-8),试求P、Q两点间的距离;
(2)已知点M(m,5),N(0,2)且MN=5,求m的值;
(3)求代数式
的最小值.
已知在平面内有两点P1(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf2102b730fe50c8681f1a6fafe67af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c788875fe76212a7c59d0a9cee345d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd910af5916a5bec4ccef547dec704c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84582197ed0d1963e42fb03a0fa14158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d774e4b00d12342ef869c610fa55e98a.png)
(1)已知点P(2,4),Q(-3,-8),试求P、Q两点间的距离;
(2)已知点M(m,5),N(0,2)且MN=5,求m的值;
(3)求代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7060d8082650c782765c182548e2a488.png)
更新时间:2022-04-08 09:34:00
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解答题-问答题
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适中
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【推荐1】如图,不在同一直线上的四点A,B,C,D,请按要求画图.
(1)作直线
;
(2)作射线
;
(3)在线段
取一点E,使
的值最小.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/4/bc9d537c-1938-4f6c-914b-0140bd0cf1e3.png?resizew=116)
(1)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5aedb7470128f1782be91f5f444a6d5.png)
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解答题-作图题
|
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名校
【推荐2】已知如图,平面上有
、
、
、
、
五个点,根据下列语句画出图形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/78c33a3f-a2be-4f41-9583-22f5813797d4.png?resizew=72)
(1)直线
与射线
相交于点
;
(2)连接
,并在线段
的反向延长线上作线段
且使
(用尺规作图,保留作图痕迹,不写作法);
(3)在直线
上求作一点
,使点
到
、
两点的距离之和最小,并说明作图依据.
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/78c33a3f-a2be-4f41-9583-22f5813797d4.png?resizew=72)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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【推荐1】阅读材料:
两点间的距离公式:如果直角坐标系内有两点A(x1,y1)、B(x2,y2),那么A、B两点的距离AB=
.则AB2=(x1﹣x2)2+(y1﹣y2)2.
例如:若点A(4,1),B(2,3),则AB=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a2e84445bdf1e113df454bd936201c.png)
根据上面材料完成下列各题:
(1)若点A(﹣2,3),B(1,﹣3),则A、B两点间的距离是 .
(2)若点A(﹣2,3),点B在坐标轴上,且A、B两点间的距离是5,求B点坐标.
(3)若点A(x,3),B(3,x+1),且A、B两点间的距离是5,求x的值.
两点间的距离公式:如果直角坐标系内有两点A(x1,y1)、B(x2,y2),那么A、B两点的距离AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e8221447d40cf554d2a87bac6caece.png)
例如:若点A(4,1),B(2,3),则AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a2e84445bdf1e113df454bd936201c.png)
根据上面材料完成下列各题:
(1)若点A(﹣2,3),B(1,﹣3),则A、B两点间的距离是 .
(2)若点A(﹣2,3),点B在坐标轴上,且A、B两点间的距离是5,求B点坐标.
(3)若点A(x,3),B(3,x+1),且A、B两点间的距离是5,求x的值.
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【推荐2】先阅读下列一段文字,再解答问题
已知在平面内有两点
,其两点间的距离公式为
,同时,当两点所在的直线在坐标轴上或平行于坐标轴或垂直于坐标轴时,两点间距离公式可简化为
或
.
(1)已知点
,则
;
(2)已知点C、D在平行于y轴的直线上,点C的纵坐标为6,点D的纵坐标为
,则
;
(3)已知点
,并且
,求m的值.
已知在平面内有两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a00dc6f0af494437c9f98223f3e861f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d221b02c865907c755c3bd52fadf846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4e94463a0f22990789c5494916e844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea85462de4f0c3de7b8f47242a3102b.png)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681aa62937714b7979eec955f16650e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
(2)已知点C、D在平行于y轴的直线上,点C的纵坐标为6,点D的纵坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baef4443b6fe70db22c5393dea328509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4856846221136eadf96150f02199bc5.png)
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