DescriptionThumbs down red with minus sign.svg English: This symbol indicates a particular goal or outcome is being undermined. Date 2 June 2020 Source...
svg|Gnomonic triangle File:Bettini(1660)-(2).svg|Circle marked each 30° File:Bettini(1660)-(3).svg|Construction Lines File:Bettini(1660)-(4).svg|Hour...
contains an example that the student can copy and modify to circumstance with a discussion section beneath containing links to our online Help sections...
