Keywords: Descriptive geometry - skew lines appear in specified length ratio.png Descriptive geometry - skew lines appear in specified length ratio This drawing is one of several in a series used to illustrate Descriptive Geometry examples 2005 United States Department of the Navy Originally published with author copyright reserved in Engineering Design Graphics Journal by Robert P Kelso Sr w Image Descriptive_geometry_-_skew_lines_appear_in_specified_length_ratio jpg 2004-03-18 Drawn by Pat Kelso Pat Kelso en relicense helix84 Descriptive geometry Skew lines |