TY JOUR TI Augmented Reality in Descriptive Geometry KW augmented reality (AR) KW descriptive geometry (DG) KW Vuforia KW SkethUp KW AutoCAD KW spatial thinking JO Geometry & Graphics AU Ignat'ev, S.A. AU Tret'yakova, Z.O. AU Voronina, M.V. PY 2020 IS 8 PB INFRA-M Academic Publishing LLC.