Lines, 2 Parallel Vertical Small 18×320 Medium 37×640 Large 59×1024 Download Tiff Original 172×3000 | (43.0 KB) Description 2 parallel vertical lines with arrows on both ends to show that they extend indefinitely. Keywords line, lines, parallel lines, undefined slope, vertical Galleries Lines Source: Florida Center for Instructional Technology Clipart ETC (Tampa, FL: University of South Florida, 2009)
