如图, CD∥AB,∠DCB=70°,∠CBF=20°,∠EFB=130°,∠CEF=60°,则∠ACB=______ .
![](https://img.xkw.com/dksih/QBM/2019/5/7/2198579932151808/2205667980738560/STEM/297dd069-fade-40af-b5db-cbb5798398fc.png?resizew=111)
更新时间:2019-05-17 16:25:54
|
相似题推荐
填空题
|
适中
(0.65)
解题方法
【推荐1】如图,已知AB//CD,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c44345de7d1f37b48def25db8c5e2b.png)
____ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51783c0aceeee6e0c68d377b0333db78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45895d13bc67e66495595c86cf15e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aea3062590a2372cf1afb7d51dc06e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c44345de7d1f37b48def25db8c5e2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/24/b0308d90-5ef7-4671-a282-01c4e3fcf370.png?resizew=165)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】对于平面内的
和
,若存在一个常数
,使得
,则称
为
的k系补周角.如若
,
,则
为
的6系补周角,如图,在平面内
,E是
,
之间的一点,连接
,
,若
,
是
的5系补周角,则
的度数为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bfa0bbe05b01453e6ed15d74da2602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d17816617696dc58a42cacaa454e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9870249d8564576a788fa11a3692e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bfa0bbe05b01453e6ed15d74da2602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbbf59ea22f2df8655052fa83129a21a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7369f524ee35ee1f4694aca79f99816e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bfa0bbe05b01453e6ed15d74da2602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a742abf1b0702125a0c77cbfbef118ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4d00b86b2f067b902baf6e52f0faab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】一副三角板按如图所示叠放在一起,其中顶点B,F重合,若固定三角板
,改变三角板
的位置,其中
点位置始终不变,则下列条件:
①
;②
;③
;④
中,能得到的
的有______ (填写序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a317c71024409f655ae76b4119b9c1d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62491513852e65f93c804105c2af5920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9d74d47d93f5540e801834aa71b3bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0365b36e8e6b1014d3afe42eca9e93aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b890789afcbdde532be3fd54a585442d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cc39bd5f811ee710c8a9fb73d57791.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/238d0f20-e783-494c-9516-113d7e5f3b54.png?resizew=146)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,已知
,
,
,要使
,则需添加__________ (只填出一种即可)的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54ccc7d2f8af35a252977d6e2af4663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284e282bb1d9fbf8634b3506ee5358ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,已知AB
CD,FE⊥AB于点E,点G在直线CD上,且位于直线EF的右侧._____ ;
(2)若∠AEH=∠FGH=20°,∠H=50°,则∠EFG的度数是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
(2)若∠AEH=∠FGH=20°,∠H=50°,则∠EFG的度数是
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】若菱形的周长为20,两邻角度数之比为1:2,则菱形的面积为_______ .
您最近一年使用:0次