相关OFA的文学知识

问题详情：如图，正方形OABC绕着点O逆时针旋转40°得到正方形ODEF，连接AF，则∠OFA的度数是(    ) A.15°            B．20°             C．25°        D．30°  【回答】C 知识点：图...

问题详情：如图，正方形OABC绕着点O逆时针旋转40°得到正方形ODEF，连接AF，则∠OFA的度数是()A．15°    B．20°      C．25°    D．30°【回答】C知识点：图形的旋转题型：选择题...

问题详情：Londonhasbecomeacycle-friendlyzoneafterthelaunch(启动)ofanewbikehirescheme.IthasbeendesignedtoencouragemorepeopletocycleinandaroundcentralLondon.Sohowdoesitwork？Firstyouhavetosignuptotheschemet...