if the earth is flat,then if u watch the sails on the beach,u would see the sail completely,but then in reality,u can only see the top of sail at a far distance,then the whole thing if the sail comes close
if the earth is flat,then if u watch the sails on the beach,u would see the sail completely,but then in reality,u can only see the top of sail at a far distance,then the whole thing if the sail comes close