如图,D,E,F,G,H,I是三角形ABC三边上的点,连结EI,EF
BC,GH
AC,DI
AB.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/c33c1863-2dbd-4554-8489-255c648df324.png?resizew=200)
(1)写出与∠IEC是同旁内角的角.
(2)判断∠GHC与∠FEC是否相等,并说明理由.
(3)若EI平分∠FEC,∠C=56°,∠B=50°,求∠EID的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/c33c1863-2dbd-4554-8489-255c648df324.png?resizew=200)
(1)写出与∠IEC是同旁内角的角.
(2)判断∠GHC与∠FEC是否相等,并说明理由.
(3)若EI平分∠FEC,∠C=56°,∠B=50°,求∠EID的度数.
更新时间:2016-12-06 12:31:05
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【知识点】 根据平行线的性质求角的度数解读
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