AB and BC are two diagonals drawn on adjacent faces of a cube. How many degrees is the angle ABC?
So rather than spoil the previous weeks’ riddles by posting the answer here, I decided to dedicate a page to the answers.
[EDIT – 2007.07.25]
Ok so based on the fact there are hardly any comments that I have approved for this particular riddle (meaning most of you got it right) makes me find that this one was way too easy. I dunno, maybe I should throw some of the MENSA riddles your way? Of course this was one of them. And happened to be an interview question a while back.