Spiral Small 247×320 Medium 495×640 Large 792×1024 Download Tiff Original 2319×3000 | (156.2 KB) Download EPS Vector 338.4 KB Description Illustration of spiral with unequally spaced intervals. Keywords geometry, spiral, trigonometry Galleries Spirals Source: Florida Center for Instructional Technology Clipart (Tampa: University of South Florida, 2007)