如图,在Rt△ABC中,∠C=90°,AC=6,BC=8,点F在边AC上,并且CF=2,点E为边BC上的动点,将△CEF沿直线EF翻折,点C落在点P处,则点P到边AB距离的最小值是( )
![](https://img.xkw.com/dksih/QBM/2021/11/30/2862430180671488/2862534576553984/STEM/75e9cb0f-e82c-43f7-a219-d3d9ab40842e.png?resizew=203)
![](https://img.xkw.com/dksih/QBM/2021/11/30/2862430180671488/2862534576553984/STEM/75e9cb0f-e82c-43f7-a219-d3d9ab40842e.png?resizew=203)
A.1 | B.1.2 | C.3 | D.5 |
2021九年级·全国·专题练习 查看更多[1]
(已下线)隐圆模型---点圆、线圆最值【模型专题】
更新时间:2021-11-30 17:44:24
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】如图,A是直线l外一点,过点A作AB⊥l于点B,在直线l上取一点C,连结AC,使AC=2AB,P在线段BC上连结AP.若AB=3,则线段AP的长不可能是( )
A.3.5 | B.4 | C.5.5 | D.6.5 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知
是直线
外一点,以
为一个端点作线段
,使端点
在直线
上,并且使线段
的长为
,这样的线段可以作的条数是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a9eed64d225267a58cd001db67e2a3.png)
A.0或1 | B.1或2 | C.0或2 | D.非以上答案 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐1】如图,在矩形ABCD中,AB=8,BC=12,点E是BC的中点,连接AE,将△ABE沿AE折叠,点B落在点F处,连接FC,则CF=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/adb20660-5dd0-4d27-9dad-ee0fa5de9874.png?resizew=150)
A.6 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,
在
轴正半轴上,
在
轴正半轴上,以
,
为边构造矩形
,点
的坐标为
,
,
分别为
,
的中点,将
沿
折叠,点
的对应点
恰好落在
上,则点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba31c1dd27defc2621e4fb4d7006f7f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/989a75fb-d39c-4ca2-96b0-7fdea3b318d1.png?resizew=175)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,弧BE是半径为6的圆D的
圆周,C点是
上的任意一点,△ABD是等边三角形,则四边形ABCD的周长P的取值范围是( )
![](https://img.xkw.com/dksih/QBM/2018/3/4/1895116802375680/1896414283505664/STEM/c320e4bec5d94228816f3272388ade22.png?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
![](https://img.xkw.com/dksih/QBM/2018/3/4/1895116802375680/1896414283505664/STEM/c320e4bec5d94228816f3272388ade22.png?resizew=120)
A.12<P≤18 | B.18<P≤24 | C.18<P≤18+6![]() | D.12<P≤12+6![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】下列说法:①经过三点可以作一个圆;②90°的角所对的弦是直径;③相等的圆周角所对的弧相等;④直径是圆中最长的弦.其中正确的说法有( )
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
真题
【推荐1】如图,梯形ABCD中,AB∥DC,DE⊥AB,CF⊥AB,且AE =" EF" =" FB" = 5,DE = 12,动点P从点A出发,沿折线AD-DC-CB以每秒1个单位长的速度运动到点B停止.设运动时间为t秒,y = S△EPF,则y与t的函数图象大致是
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/e4aa82ab-d96f-4388-995f-20937a066763.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/e4aa82ab-d96f-4388-995f-20937a066763.png?resizew=119)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,点
为
的内心,
,
,点
,
分别为
,
上的点,且
.甲、乙两人有如下判断:甲:
:乙:当
时,
的周长有最小值.则下列说法正确的的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a6925234d4375ce9aeb5b3c8ee30eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac144685e50009fa7c9233d85e8bd85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf271d6475f5305bc922677b4cfe28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
A.只有甲正确 | B.只有乙正确 |
C.甲、乙都正确 | D.甲、乙都错误 |
您最近一年使用:0次