The flag is rectangular, the length being one and one-half times the width, the upper half being blue, the lower half being old gold, with a white Sigma Chi cross standing upright in the center and parallel to the lesser sides.
.jpg: These files have a resolution of 72 dpi (dots per inch). The .jpg is used for on-screen communications such as websites and digital presentations.
.tif: These files have a resolution of 300 dpi and are intended for use in printed documents. The .tif is one of the most flexible image file types available in terms of preserving compatibility across systems and programs.
.eps (Adobe Illustrator): An .eps is a graphic that is made in Adobe Illustrator and is composed of straight lines, not pixels. This type of file is most commonly used for printed documents.