.如图,在△ABC 中,按以下步骤作图:
①分别以点 A、C为圆心,以大于
AC的长为半径画弧,两弧相交于 M、N两点;
②作直线MN交 BC 于点 D,连接 AD, 若∠C=28°,AB=BD;
求∠B的度数.
![](https://img.xkw.com/dksih/QBM/2018/12/26/2105311735087104/2106040744058880/STEM/8cac37568b354ee69dc1a3f7f9fdae44.png?resizew=192)
①分别以点 A、C为圆心,以大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
②作直线MN交 BC 于点 D,连接 AD, 若∠C=28°,AB=BD;
求∠B的度数.
![](https://img.xkw.com/dksih/QBM/2018/12/26/2105311735087104/2106040744058880/STEM/8cac37568b354ee69dc1a3f7f9fdae44.png?resizew=192)
![](https://img.xkw.com/dksih/QBM/2018/12/26/2105311735087104/2106040744058880/STEM/8cac37568b354ee69dc1a3f7f9fdae44.png?resizew=192)
更新时间:2018-12-27 22:13:46
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