如图,在
中,
,
,D是
的中点,动点P从A点出发以
的速度向终点C运动,设运动时间为
,若
的中垂线恰好经过点D时,则t的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/9b0f8f74-1452-44cc-ab39-2ed39ba9352b.png?resizew=108)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5b21129fa053bb83a3c1e95e0285d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2732c063f01d83e8f7cfc2b138732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d744165d6aad705f64de41a9d931750a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/9b0f8f74-1452-44cc-ab39-2ed39ba9352b.png?resizew=108)
A.12 | B.![]() | C.![]() | D.![]() |
23-24八年级上·浙江温州·期中 查看更多[2]
浙江省温州市鹿城区实验中学2023-2024学年八年级上学期期中数学试题(已下线)专题1.12 线段垂直平分线(题型分类拓展)-2023-2024学年八年级数学下册基础知识专项突破讲与练(北师大版)
更新时间:2024-01-04 21:36:32
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【推荐1】如图,
中,
,
于D,BE平分
,且
于E,与CD相交于点F,
于H,交BE于G,下列结论:①
;②
;③
;④
.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/77eaca6d-b293-430d-9d12-d669b3f064f4.png?resizew=194)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.4个 | B.3个 | C.2个 | D.1个 |
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【推荐2】如图所示,CD是线段AB的对称轴,与线段AB交于D,则下列结论中正确的有( )
![](https://img.xkw.com/dksih/QBM/2017/12/1/1829271999447040/1830965675253760/STEM/7c412821-44a8-43b4-9bbe-e78c72727717.png?resizew=219)
①AD=BD; ②AC=BC; ③∠A=∠B; ④∠ACD=∠BCD; ⑤∠ADC=∠BDC=90°.
![](https://img.xkw.com/dksih/QBM/2017/12/1/1829271999447040/1830965675253760/STEM/7c412821-44a8-43b4-9bbe-e78c72727717.png?resizew=219)
①AD=BD; ②AC=BC; ③∠A=∠B; ④∠ACD=∠BCD; ⑤∠ADC=∠BDC=90°.
A.2个 | B.3个 | C.4个 | D.5个 |
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于点
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A.10 | B.11 | C.12 | D.13 |
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【推荐2】如图,已知△ABC的面积为16,BP平分∠ABC,且AP⊥BP于点P,则△BPC的面积是( )
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