Sunday 9 June 2013

Skating, Estonia

A cover with strangely shaped stamp issued in 2010 regarding the European Figure Skating Championship in Tallin. Received via one of those philatelic chain letters :)
Ehm, I had to look up the is one of the cyclic quadrilaterals.

1 comment:

  1. That is a shape name I never knew the name, or indeed if it had one.