An image display method is provided. The image display method includes displaying a plurality of images on a screen that includes a plurality of sub-screens, displaying a first indicator indicating a first point located at a boundary of the plurality of the sub-screens, displaying second indicators on a plurality of second points which are different from the first point, receiving an input selecting one of the second indicators, and moving a boundary at which the first point is located, so that the first point is located at a second point corresponding to the selected second indicator.