Snakes on a Plane and short film parody competitions. On July 6, 2006, the official "Snakes on a Plane" website started a promotional sweepstakes called "The #1 Fan King Cobra Sweepstakes". The contest made innovative use of the publicity-generating potential of the Internet, requiring contestants to post links on forums, blogs, and websites and collecting votes from the users of those sites. Many of the early fan-made trailers and later other viral videos and commercials circulated via YouTube, and captured media attention there with such titles as: "Cats on a Plane" (which was featured in Joel Siegel's review of "Snakes on a Plane" on
Sum of angles of a triangle Sum of angles of a triangle In several geometries, a triangle has three "vertices" and three "sides", where three angles of a triangle are formed at each vertex by a pair of adjacent sides. In a Euclidean space, the sum of measures of these three angles of any triangle is invariably equal to the straight angle, also expressed as 180 °, radians, two right angles, or a half-turn. It was unknown for a long time whether other geometries exist, where this sum is different. The influence of this problem on mathematics was particularly strong during the 19th century. Ultimately, the