A display apparatus including a communication port to communicate with an external source, an on screen display (OSD) generator to generate an OSD menu, and a display panel to display the OSD menu thereon, the display apparatus further including a pivot sensor to sense a pivoting angle of the display panel, and output data corresponding to the pivoting angle when the display panel is pivoted, and a controller to set an OSD displaying direction of the OSD generator according to the data about the pivoting angle from the pivot sensor, and transmit the data relating to the pivoting angle to the external source through the communication port.