如图,正五边形的对角线
、
相交于点
,则
的度数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
2024·陕西西安·三模 查看更多[2]
2024年陕西省西安市雁塔区陕西师范大学附属中学中考三模数学试题(已下线)专题6.9 多边形的内角和与外角和(分层练习)-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:2024-03-29 13:37:46
|
相似题推荐
填空题
|
适中
(0.65)
【推荐1】如图.在
中,
,
,点D在线段
上运动(点D不与点B、C重合),连接
,作
,
交线段
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/bb6b0068-e63d-4291-9c93-b1590a73b92d.png?resizew=249)
(1)点D从B向C的运动过程中,
逐渐变____ (填“大”或“小”);
(2)在点D的运动过程中,当
的度数是_____________ 时,
是等腰三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967ce155d6fbce233c72e9895793e1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a46ef5fc6cdb5367efae4b8b829f5c0.png)
![](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/3a9608cad892644b4094ed6438b69572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/bb6b0068-e63d-4291-9c93-b1590a73b92d.png?resizew=249)
(1)点D从B向C的运动过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b47abcacc10f90489c0d52a9e269ab.png)
(2)在点D的运动过程中,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b47abcacc10f90489c0d52a9e269ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c9a77f3dcaacefe3ee0a64ddf7f73a.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,在等边
中,
是边
上一点,连接
,将
绕点
逆时针旋转
得到
,连接
,若
,
,则以下四个结论中:①
是等边三角形;②
;③
的周长是10;④
.其中正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542b5bc10c7341c04c22244f3ec16e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebadc5f85c6756be28c079d5eefce3a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/83d8e6cb-497b-4995-b835-318d88dace19.png?resizew=122)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,在
中,
,以点
为圆心,
长为半径画弧交
于点
和点
,再分别以点
和点
为圆心,大于
长为半径画弧,两弧相交于点
,作射线
交
于点
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b347da9da842f89d3ecce7e6ed1e6411.png)
_______ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dbbe4148279f441cfd795a90b1162c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c5840e0454fdec7d2158072c43b8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b347da9da842f89d3ecce7e6ed1e6411.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,从一个边长是
的正五边形纸片上剪出一个扇形,并将剪下来的扇形围成一个圆锥,则该圆锥的底圆直径为________ .(用含
的代数式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】平面上,将边长相等的正三角形、正方形、正六边形的一边重合并叠在一起,如图,则∠1+∠2+∠3=_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/8bba7249-86fc-4b2d-b201-b7665de1fc73.png?resizew=140)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐1】如果一个多边形的每个内角为160°,那么它的边数为_______ .
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】鹿鸣社区里有一个五边形的小公园,如图所示,王老师每天晚饭后都要到公园里去散步,已知图中的∠1=
,王老师沿公园边由A点经B→C→D→E,一直到F时,他在行程中共转过了_____ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67574d7f0bcea29fdbf6efbc68f282ba.png)
![](https://img.xkw.com/dksih/QBM/2020/12/17/2616249611157504/2617721363054592/STEM/c3fcd40c-0f62-4a20-bd4c-9487f385ac72.png)
您最近一年使用:0次