The Great Straight Lines debate Oct 24, 2016 * Edited 2016-10-24 to add categories, just for Cav. A selection of other posts Jul 19, 2021 A STEP question that just drops out Jul 12, 2021 The Angle Windmill Sep 1, 2014 “Just invert and multiply” Jan 16, 2012 How to do... R-sin-alpha questions subscribe via RSS
