如图,在矩形
中,
于点E,
,那么
等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/f3ec2b36-db7a-45f8-bea8-bcefbd545031.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57de1464a80c32dcf0ecfe388f2be399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/f3ec2b36-db7a-45f8-bea8-bcefbd545031.png?resizew=143)
A.![]() | B.![]() | C.![]() | D.![]() |
22-23九年级上·江西九江·期末 查看更多[2]
更新时间:2023-12-10 09:05:00
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【推荐1】对于题目:“在
中,
,分别以A,B为圆心,以
长为半径的两条弧相交于点P,求
的度数”.嘉嘉求解的结果是
,淇淇说:“嘉嘉的解答正确但不全面,
还有另一个不同的值.”则下列判断中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ae599c3e37765826272420b5eecb9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a25a30b945c0a306802a9d7748bccdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
A.淇淇说得对,![]() ![]() | B.淇淇说的不对,![]() ![]() |
C.嘉嘉求的结果不对,![]() ![]() | D.两人都不对,![]() |
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【推荐2】如图,若
内一点P,满足
,则称点P为
的布洛卡点.某数学兴趣小组研究一些特殊三角形的布洛卡点,得到下列两个命题:
①若
,则
;
②若
,则
.
下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/6e6396a6-33c3-4dc5-bbbe-39c16f08dd31.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cacea642a82c85058a03244a39cfeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a665ba024f2840ce5aef3765249341.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6874301ab14eb164467137bb6927f72.png)
下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/6e6396a6-33c3-4dc5-bbbe-39c16f08dd31.png?resizew=173)
A.①为真命题,②为假命题 | B.①为假命题,②为真命题 |
C.①,②均为假命题 | D.①,②均为真命题 |
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【推荐1】如图,∠BAC=120°.若MP和NQ分别垂直平分AB和AC,则∠PAQ的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/9473e058-e0fe-46d6-b9e8-91e83e0bf850.png?resizew=180)
A.30° | B.40° | C.60° | D.50° |
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【推荐2】如图,点E,F分别是菱形
边
的中点,
交
的延长线于点G.若
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e545f31f7cc57a31843f5adfd02941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c13ab7f17263c4e6163d960f1c5060.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在四边形
中,
相交于点O,且
,点E从点B开始,沿四边形的边
运动至点D停止,
与
相交于点N,点F是线段
的中点.连接
,下列选项不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d3ea3bdfca7111b823bb1c381a0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdad2e298d52079589e6de6d69d042e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7e5389296a5226b31c66f711c3e2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
A.四边形![]() |
B.当点E是![]() ![]() |
C.当![]() ![]() |
D.当点E在边![]() ![]() ![]() |
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【推荐2】顺次连接矩形各边中点得到的四边形是( )
A.梯形 | B.矩形 | C.菱形 | D.正方形 |
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