TY  JOUR
TI  Ostensibilities in Geometry
KW  imaginary points
KW  imaginary straight lines
KW  types of
imaginary straight lines
KW  imaginary corner
KW  perpendicular to an
imaginary straight line
KW  circle
KW  conic
KW  quadric
KW  radical axis
KW  chordal
straight line
KW  dilatation
KW  bunch
KW  degeneration in a bunch
KW  synthetic
and analytical figures
KW  interrelation of valid and imaginary
JO  Geometry & Graphics
AU  Girsh, A.G.
PY  2014
IS  2
PB  INFRA-M Academic Publishing LLC.