如图,
中,
,
,DE是AC边的垂直平分线,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/4bda2332-2509-49c9-98ef-375934ba47e5.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d384390f4e0a1e0abd4cc19382d94db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b3ccbed8aa44da96fbf16bb9978b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/4bda2332-2509-49c9-98ef-375934ba47e5.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21八年级上·浙江杭州·期末 查看更多[3]
更新时间:2020-01-12 15:11:15
|
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单选题
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适中
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【推荐1】如图,在
中,
,按以下步骤作图:
,点
为圆心,大于
的长为半径作弧,两弧相交于
两点(点
在
的上方);
(2)作直线
交
边于点
,连接
;
(3)以点
为圆心,
的长为半径作弧,与
边相交于点
,连接
.
则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48e56abd1cdbe97bf386745d039874a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
(3)以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
中,
,
为等边三角形,则
、
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之间的关系为( )
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A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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名校
【推荐1】如图,在△ABC中,∠C=90°,∠B=30°,以A为圆心,任意长为半径画弧分别交AB、AC于点M和N,再分别以M、N为圆心,大于
MN的长为半径画弧,两弧交于点P,连结AP并延长交BC于点D,则下列说法中正确的个数是( )
①AD是∠BAC的平分线;
②∠ADC=60°;
③点D在AB的中垂线上;
④BD=2CD.
![](https://img.xkw.com/dksih/QBM/2016/3/22/1574185882435584/1574185888735232/STEM/afb93fb2d2244681bde8da4141a767cb.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
①AD是∠BAC的平分线;
②∠ADC=60°;
③点D在AB的中垂线上;
④BD=2CD.
![](https://img.xkw.com/dksih/QBM/2016/3/22/1574185882435584/1574185888735232/STEM/afb93fb2d2244681bde8da4141a767cb.png?resizew=183)
A.4 | B.3 | C.2 | D.1 |
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【推荐2】如图,菱形
中,
,点C在x轴上,分别以A、B为圆心,以大于
的长作弧,两弧分别交于P、Q两点,作直线
,交
于点M,交
于点N,则点N的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c1a23c1036e8374e1264d12a2ddc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/1/1222585d-bca5-4f4c-a5f1-7acfa4addf4a.png?resizew=210)
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您最近一年使用:0次
单选题
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适中
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【推荐1】如图,
,AB=BC=CD=DE=EF,则∠A的度数为( )
![](https://img.xkw.com/dksih/QBM/2015/1/5/1573781105876992/1573781112061952/STEM/649dbbb441304e8486108a6a70435f02.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fae9fe65242633fd596b89df64903a5.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1573781105876992/1573781112061952/STEM/649dbbb441304e8486108a6a70435f02.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
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【推荐2】如图,四边形ABCD是正方形,延长BC到E,使
,连接AE交CD于点F,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/e8ba7ea8-5728-4fe1-881b-e4fca25abdcf.png?resizew=235)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09de6bc03bcf984c84aebc72352da50d.png)
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A.67.5° | B.65° | C.55° | D.45° |
您最近一年使用:0次