Four-sided triangle: A card trick that is used to predict a random selection from a spectator. However there is enouh Magic in here to keep you interested whichever of the two disciplines you wish to follow. In this trick, the mentalist asks the audience or a volunteer to think of any number, any one at all. Don’t worry, we’re here to walk you through it! And I can't say too much about the contents without giving away methods! Trust me, it has enough in there to make it worthwhile Discover how t