We use the constitution of Nepal to re-create its distinctive, double-triangular flag. Nepal has never won a full Olympic medal (though it once picked up bronze in an exhibition sport!) Try it yourself using these instructions: www.servat.unibe.ch/icl/np01000_.html The final sketch by James is at www.flickr.com/photos/numberphile/7703604582/ Featuring Dr James Grime. Website: www.numberphile.com/ Numberphile on Facebook: www.facebook.com/numberphile Numberphile tweets: twitter.com/numberphile Videos by Brady Haran