如圖，正方形OABC繞着點O逆時針旋轉40°得到正方形ODEF，連接AF，則∠OFA的度數是( ) A....
問題詳情：如圖，正方形OABC繞着點O逆時針旋轉40°得到正方形ODEF，連接AF，則∠OFA的度數是( ) A.15° B．20° C．25° D．30° 【回答】C 知識點：圖...
如圖，正方形OABC繞着點O逆時針旋轉40°得到正方形ODEF，連接AF，則∠OFA的度數是( )A．15°...
問題詳情：如圖，正方形OABC繞着點O逆時針旋轉40°得到正方形ODEF，連接AF，則∠OFA的度數是()A．15° B．20° C．25° D．30°【回答】C知識點：圖形的旋轉題型：選擇題...
Londonhasbecomeacycle-friendlyzoneafterthelaunch(啓動)ofa...
問題詳情：Londonhasbecomeacycle-friendlyzoneafterthelaunch(啓動)ofanewbikehirescheme.IthasbeendesignedtoencouragemorepeopletocycleinandaroundcentralLondon.Sohowdoesitwork？Firstyouhavetosignuptotheschemet...