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
Corresponding sides and corresponding angles in the case of the triangle this is not sufficient to establish congruence (as exemplified by a square and a rhombus that have the same side length). Similarity tests look at whether the ratios of the lengths of each pair of corresponding sides are equal, though again this is not sufficient. In either case equality of corresponding angles is also necessary; equality (or proportionality) of corresponding sides combined with equality of corresponding angles is necessary and sufficient for congruence (or similarity). The corresponding angles as well as the corresponding sides are defined as appearing in the same sequence, so for