IMO Shortlist 1972 problem 7


Kvaliteta:
  Avg: 0,0
Težina:
  Avg: 0,0
Dodao/la: arhiva
2. travnja 2012.
LaTeX PDF
Given four distinct parallel planes, prove that there exists a regular tetrahedron with a vertex on each plane.
Izvor: Međunarodna matematička olimpijada, shortlist 1972