My favorite theorem would have to be the Pythagorean Theorem (c^2=a^2+b^2). I like this theorem because it is used in all different levels of mathematics. From the beginning levels that are taught in middle schools, to the most difficult college courses, this theorem plays a huge role in mathematics. There are many different proofs of this theorem, ranging in complexity. Most are semi-difficult and require a background in mathematics. Another reason why I like this theorem is because the concept of finding the lengths of the sides of a right triangle using this equation is very interesting to me. --Awika 16:54, 21 January 2009 (UTC)
